Minerals Report - International Seabed Authority

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Phosphorite and fresh basalt are strong, competent rocks and contrast significantly with crusts, which are weak, light-weight, and porous (Table 4); the other rock types, including altered basalt, may not contrast much in physical properties with Fe-Mn crusts. In general, crusts are much more porous (mean 60%) than most substrate rocks and have an extreme amount of specific surface area, which averages about 300 m2 /g (Table 4), similar to the surface area of silica gel. The surface area decreases by up to 20% when measured one month after collection of the crust and up to 40% after two months (45). This clearly shows that many physical properties that are measured a long time after collection of the crusts may not closely approximate in situ crust properties. The mean wet bulk density of crusts is 1.90 g/cm3 and the mean dry bulk density is 1.30 g/cm3 . The P-wave velocity of crusts may be less or more than that of sedimentary substrate rocks, but is generally less than that of basalt. This variable contrast will make it difficult to develop sonic devices for measuring in situ crust thicknesses. The most distinctive property of Fe-Mn crusts is their gamma radiation level, which averages 475 net counts/min in contrast to sedimentary rock substrates (101) and basalt substrates (146; Table 4). Gamma radiation may be a useful tool for crust exploration under thin-sediment cover and for measuring crust thicknesses in situ. INTERNATIONAL SEABED AUTHORITY 204
Table 4. Physical properties of Fe-Mn crusts and substrate rocks, from Hein et al. (37) Physical Properties n Fe-Mn Crusts n Sed. Rock substrate INTERNATIONAL SEABED AUTHORITY 205 n Basalt substrate Porosity (volume %) Range 13 52-66 8 18-47 2 15-37 38 Mean 13 61 8 39 2 26 38 - 41-74 - 7-69 - 7-67 39 - 55 - 35 - - 40 Wet bulk density (g/cm 3 ) Range 13 1.83-2.04 8 2.04-2.57 2 2.22-2.62 38 Mean 13 1.92 8 2.18 2 2.42 38 Range 18 1.90-2.44 7 1.59-2.68 23 2.06-2.66 41 Mean 18 2.00 7 1.90 23 2.34 41 Dry bulk density (g/cm 3 ) Range 13 1.18-1.48 8 1.56-2.38 2 1.84-2.46 38 Mean 13 1.29 8 1.78 2 2.15 38 - 1.31 - - - - 40 - 1.04-2.17 - 1.44-2.92 - 0.78-2.74 39 Grain density (g/cm 3 ) Range 13 3.03-3.87 - - - - 38 Mean 13 3.48 - - - - 38 - 2.70-3.44 - 2.54-2.81 - 2.32-2.95 42 Specific surface area (m 2 /g) Range 15 250-381 - - - - 43 Mean 15 323 - - - - 43 Compressive strength (MPa) - 8.36 - 3.66-32.6 - - 40 - 0.5-25.0 36 0.1-52.3 - 0.37-71.0 39 Seawater saturated - 5.39-8.92 - 1.71-12.4 - 165-219 40 Tensile strength (MPa) - 1.75 - 4.5 - - 40 - 0.1-2.3 - 0.1-4.5 - 0.1-18.9 39 Seawater saturated - 0.45 - 0.23-0.48 - 11.9 40 Cohesive strength (MPa) - 2.9 - 7.8 - - 40 Seawater saturated - 1.5 - 0.4-2.3 - 26.4 40 Shear strength (MPa) - 1.26-2.5 - - - - 44 Angle of internal friction - 42˚ - 52˚ - - 40 Seawater saturated - 76˚ - 61˚-77˚ - 76˚ 40 Young's modulus (GPa) - 2.15 - 0.31-10.1 - - 40 Seawater saturated - 3.11-4.25 - 0.62-4.76 - 51.3-63.7 40 P-wave velocity (km/s) - 2.09-3.39 - 1.76-5.86 - - 39 Range, parallel to bedding 18 2.46-4.19 5 1.80-4.35 23 3.14-5.14 41 Mean, parallel to bedding 18 3.36 5 2.57 23 4.13 41 Range, perpendicular to layers 17 2.07-3.86 4 1.78-4.34 23 3.02-4.93 41 Mean, perpendicular to layers 17 3.16 4 2.56 23 3.99 41 - 2.26 - 1.01-3.45 - - 40 Seawater saturated - 2.72-2.78 - 2.07-2.87 - 5.76-5.80 40 S-wave velocity-saturated (km/s) - 1.35-1.83 - 1.15-1.67 - 3.46-3.57 40 Gamma radiation (net counts/min) Range 18 271-800 6 52-137 23 21-366 41 Mean 18 475 6 101 23 146 Dash means not reported Ref.
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Workshop on Minerals Other than Pol
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Published in Jamaica 2004 by the In
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Chapter 6* Impact of the Developmen
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PART 4 REGULATORY AND PROMOTIONAL F
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The Authority designates one of two
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deposits and gas hydrates of the co
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Prof. Chris German, Challenger Divi
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Mr. Sven Petersen, Research Associa
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SECRETARIAT Ambassador Satya N. Nan
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is to submit “an application that
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that was established to help protec
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on the continental margin. He state
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with the German firm Preussag. As p
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metre or metres of these black smok
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nodules in terms of these metals -
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Professor Herzig stressed however t
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While noting that the continuity of
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asal diameter at 1,600 m water dept
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discovery of the new hydrothermal s
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esearch cruises dedicated to ferrom
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global mid-ocean ridge system. He p
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athymetric map of the seafloor. A s
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were encouraging. In the course of
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that this matter was sensitive, he
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complete a preliminary evaluation o
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metals - nickel, cobalt, manganese,
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12. Issues to be taken into account
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entities. Many of them included min
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In this regard, the Secretary-Gener
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According to Dr. Vysotsky, as estim
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With regard to current knowledge ab
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Dr. Corbett gave a brief account of
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River resulting in the introduction
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Ms. Zaamwani pointed out that as th
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geochemical and geotechnical survey
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of its continental shelf through bi
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also stated, is similar to that of
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Chapter 7 Technical requirements fo
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Table 1: Classification of marine m
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Volcanogenic Metalliferous sediment
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deposits, including massive sulphid
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3. Marine Minerals Related to Deep
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The black smoker chimneys dischargi
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contain metals are present at discr
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Figure 4. A diagrammatic east-west
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and refining of these crusts is mor
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distances of hundreds of kilometres
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2) Deep ocean hot springs at massiv
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6. P.A. Rona, M.D. Hannington, C.V.
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25. M.J. Cruickshank (1998), Law of
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With regard to marine mineral depos
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Focussing on sites of sea floor min
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scientific journal "Nature". The su
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Professor Rona recalled that the in
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like St. Stephen’s in the Kremlin
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He noted that another product of ho
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The reasons why the Red Sea deposit
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a number of geothermal wells have b
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1. Introduction The discovery of hi
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0° 30° 30° 60° Explorer Ridge C
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3. Hydrothermal Convection At ocean
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Due to its increased buoyancy at hi
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5. Metal Contents Despite moderate
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(11.8 wt.%), and have high concentr
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Table 3: Size and Tonnage - Atlanti
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Local enrichment of more than 40 pp
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the Red Sea, Middle Valley, Explore
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Table 8: Advantages of Seafloor Mas
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60 kg Au) located on the neighbouri
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9. Perspective If further explorati
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3. J.M. Franklin, J.W. Lydon, and D
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19. R.A. Zierenberg, Y. Fouquet, D.
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35. J. Collier, M. Sinha (1990), Se
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53. P.M. Herzig, Y. Fouquet, M.D. H
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68. M.D. Hannington, J.M. Peter, an
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85. The New York Times (1997), Firs
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southern segment is a fast-spreadin
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Professor Herzig said that the spec
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Professor Herzig said that the depo
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Professor Herzig informed participa
Page 162 and 163: he informed participants that in ad
Page 164 and 165: In relation to Conical Seamount, Pr
Page 166 and 167: deposits is essential to reliably a
Page 168 and 169: would be removed from the deposit.
Page 170 and 171: CHAPTER 3 REGIONAL AND LOCAL VARIAB
Page 172 and 173: � Metallogenic provinces that are
Page 174 and 175: A digital map of ore-bearing region
Page 176 and 177: of the slopes in between 1500-3000m
Page 178 and 179: development there are areas with ma
Page 180 and 181: Regarding the formation of the firs
Page 182 and 183: SUMMARY OF THE PRESENTATION AND DIS
Page 184 and 185: the Juan-de-Fuca Ridge, the Guaymas
Page 186 and 187: Intensive investigations resulted i
Page 188 and 189: Based on the potential resources co
Page 190 and 191: It should be noted that other massi
Page 192 and 193: Generally, the massive sulphides or
Page 194 and 195: With regard to the gold values repo
Page 196 and 197: CHAPTER 5 COBALT-RICH FERROMANGANES
Page 198 and 199: Current patterns, topography, botto
Page 200 and 201: Table 1: Contents of manganese, iro
Page 202 and 203: INTERNATIONAL SEABED AUTHORITY 194
Page 204 and 205: Depth (km) 0 100 200 0 1 2 3 4 5 O
Page 206 and 207: sediment. Those thinly veiled crust
Page 208 and 209: Table 3: Cruises dedicated to the s
Page 210 and 211: today. Field studies by the USA, Ge
Page 214 and 215: 3.2. Mineralogy The mineralogy of b
Page 216 and 217: Samples 25 20 15 10 5 0 Growth Rate
Page 218 and 219: 3.4. Chemical Composition All USGS
Page 220 and 221: elements associated with the detrit
Page 222 and 223: Sample/PAAS 100 10 1 0.1 0.01 0.001
Page 228 and 229: Phosphatization of the older Fe-Mn
Page 230 and 231: A. B. C. Mn FSM-Palau Marshall Isla
Page 232 and 233: 4. Iron-Manganese Crust Formation E
Page 234 and 235: 5. Biological Communities and Curre
Page 236 and 237: 6. Resource, Technology and Economi
Page 238 and 239: MAJOR DIMENSIONS Length : 13 m Widt
Page 240 and 241: not economical, under the circumsta
Page 242 and 243: Based on grade, tonnage, and oceano
Page 244 and 245: 3. J.R. Hein and C.L. Morgan (1999)
Page 246 and 247: deep sea deposits, Report on the Sc
Page 248 and 249: 29. T. Moritani and S. Nakao (eds.)
Page 250 and 251: Angeles, CA, International Society
Page 252 and 253: geochemistry of Central Pacific fer
Page 254 and 255: 73. J.W. Moffett (1990), Microbiall
Page 256 and 257: 86. D. Puteanus and P. Halbach (54)
Page 258 and 259: 110. A Koschinsky and P Halbach (46
Page 260 and 261: 132. J.R. Hein et al. (1) 133. H.H.
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B. 14°30'N 14°20'N 14°10'N 160°
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Appendix 4. 1-m-diameter circular c
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economic potential in hydrogenetic
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Zealand Oceanographic Institute, th
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depths. Up welling increases primar
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een recovered is 25 cm. He also sai
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shallower than 1500 metres, a shall
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In relation to mining technology, o
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On the most promising sites for cru
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In addition to the International Se
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1. Introduction Plant life is impos
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Table 1 Potential microbial metabol
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Figure 2 Simplified representation
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Figure 3 Major components of a gene
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the mussel's nutrition. When experi
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Reasons for this do not appear to b
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egions, one study pointed out that
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very widespread, supporting microbi
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Studies of the rapid colonisation o
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y mining, which is expected to be v
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2. J. B. Corliss, J. Dymond, L. Gor
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19. V. Tunnicliffe, A.G. McArthur a
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SUMMARY OF THE PRESENTATION AND DIS
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together with mucus that is secrete
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close to neutral ph conditions, it
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France, Germany, the United Kingdom
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of the sedimentary column, whereas
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Table 2: Research Submersibles and
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4. Technical Requirements For resea
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5. Processing Technologies The phys
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grow on substrate rocks because of
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5. M.D. Hannington, A.G. Galley, P.
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Dr. Herzig informed participants th
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search for sites of hydrothermal ve
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with such a grab. In addition to th
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Remotely operated vehicles (ROVs) D
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equired to make sure that the ship
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Dr. Herzig summarized the technical
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commercial. Since confidentiality o
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CHAPTER 8 FACTORS IN FINANCING EXPL
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The traditional project stages that
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there is a subset that forms in spe
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of competing for the attention of i
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7. Why SMS Mines will be Lower Cost
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8. Modelling SMS mining offers scop
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Because exhalative SMS deposits are
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flow to the metal markets. He also
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shortage in the next couple of year
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starts, the operation could take pl
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Based on this and other considerati
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Mr. Malnic said that the mining ope
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and silver. Except for volcanically
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2.2. Major Features of the Draft Of
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As a general principle the fiscal p
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I think the issue is not as simple
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Table 3: Data and information requi
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former case a reminder notice is se
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6. Elisabeth Mann Borgese, Ocean Go
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longer an area is held, more inform
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from the deep sea. One group of enz
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CHAPTER 10 NATIONAL AND INTERNATION
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times greater than atmospheric pres
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Fig. 2 Schematic diagram showing th
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Figure. 4: Distributions of hydroth
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Figure 6: Distributions of hydrothe
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Figure.8: Plot of incidence of hydr
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et al., 1998) - one of the two very
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seabed but, instead, are dispersed
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Figure 10: The Southampton Oceanogr
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oxide material, polymetallic sulphi
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Figure 13: TOBI sidescan sonar imag
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ACKNOWLEDGEMENTS I would like to ex
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15. Cronan D S (ed.) Handbook of Ma
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33. Gross G.A. and McLeod C.R., Met
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51. Jones H. A. and Davies P. J., P
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69. Manheim F. T., Composition and
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87. Muller, R.D., Roest, W.R., Roye
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107. Warren, J., Evaporites: their
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cultivating sulphide oxidising bact
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In relation to spreading rates at v
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coordination to actually get to go
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esources and to know whether or not
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ROVS, AUVs or submersibles to produ
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have oversimplified the case in his
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CHAPTER 11 A COMPARISON OF THE POSS
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This paper proposes to compare the
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• The distance between the mining
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economic value. Phosphatisation has
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The morphology of the mineral edifi
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Table 3: Geochemistry of known mass
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Detailed exploration has not been c
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flotation, can separate the ferroma
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The crushed and ground ore can be c
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3.2. Assumptions made for each kind
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alloys or even manganese ore in the
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ought the nickel price to a top. Th
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Because the metal market economy is
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14. J. -P. Lenoble (1992), Future d
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31. J. Francheteau, D. Needham, P.
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48. J. -P. Lenoble (1996), Les nodu
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66. J. -J. Prédali and J. -P. Polg
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classification system, Mr. Lenoble
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To recapitulate the sizes and possi
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proposed processing technologies an
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international community is only jus
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Part 2 ISSUES TO BE TAKEN INTO ACCO
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The Secretary-General said that the
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Mr. Nandan pointed out that the nex
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problems would resurface, because i
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prospecting would be more applicabl
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dimensional seafloor massive sulphi
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workshop, in relation to deposit ev
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an economic perspective, including
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sulphides and cobalt-rich ferromang
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CHAPTER 13 PETROLEUM POTENTIAL AND
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structure and filled with sediments
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Basin groups are subdivided into ty
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during the late Mesozoic-Cenozoic s
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Figure 4: Volume density of initial
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ITIPRHC = Vnr φHC γ 103 (Mmtoe),
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Table 1: Offshore (deepwater) initi
Page 506 and 507:
Speaking about particular geographi
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World Ocean, including areas off no
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Table 4: Largest oil and gas discov
Page 512 and 513:
The extremely harsh environment bro
Page 514 and 515:
In other regions of the world, enco
Page 516 and 517:
REFERENCES 1. L.G. Weeks (1971), Ma
Page 518 and 519:
SUMMARY OF PRESENTATION AND DISCUSS
Page 520 and 521:
Dr. Vysotsky said that estimates of
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In Southeast Asia, Dr. Vysotsky spo
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Philippines, and possibly Brazil. W
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and we shall encounter severe deple
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In the 1960's scientists discovered
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Figure 2. Worldwide locations of kn
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methane by bacteria in an anoxic en
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It has been assumed that the struct
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identification of gas hydrate in ma
Page 538 and 539:
ottom simulating reflections (BSR)
Page 540 and 541:
Figure 6: Interpretative plot of hy
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floor have indicated the presence o
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of free gas below the BSR is usuall
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sediment and to provide an indicati
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6. Harvesting methane hydrates -Som
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deposits can be commercial, even in
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at a catastrophic scale. Some of th
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Figure 8. Development of hydrate re
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This is perhaps due to the percepti
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would provide Japan with methane fo
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NOTES AND REFERENCES 1. E.D. Sloan
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20. R.F. Meyer (1981), Speculation
Page 564 and 565:
Master Workshop on Gas Hydrates: Re
Page 566 and 567:
60. M.D. Max and M.J. Cruickshank (
Page 568 and 569:
is that their exploitation might re
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further pointed out that even if on
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Dr. Desa also informed participants
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thickness of the sediments, the thi
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pressure at sea level leads to hydr
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aware of any studies of natural ear
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CHAPTER 15 A CASE STUDY IN THE DEVE
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NAMIBIA L W OR CT BOTSWANA SOUTH AF
Page 584 and 585:
The Orange River, one of Africa’s
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formation of a large accretion coar
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The deep-water ore body more closel
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4. The mineral resource management
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deployed on a MacArtney FOCUS 400 R
Page 594 and 595:
Utilising Jago has made very detail
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Although at first glance the nature
Page 598 and 599:
to levels capable of sustaining sea
Page 600 and 601:
In accordance with De Beers’ over
Page 602 and 603:
ACKNOWLEDGEMENTS I thank my many co
Page 604 and 605:
16. I.B. Corbett (1989), The sedime
Page 606 and 607:
Page 608 and 609:
eroded during regression and transg
Page 610 and 611:
diamond mining business. Dr. Corbet
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technological step, Dr. Corbett sug
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and Ore Reserves (JORC). He also sa
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With another slide, Dr. Corbett sho
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of De Beers’ deepwater operation
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system that allows other functions
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CHAPTER 16 A CASE STUDY IN THE DEVE
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change through heat transport and c
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Main sites of oxygen minimum Flow o
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• Undertake necessary mitigatory
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State, by such spilling or pollutio
Page 632 and 633:
including diamonds, from non-fluore
Page 634 and 635:
agreements require that government
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including current velocities, oxyge
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ackground levels and confined to a
Page 640 and 641:
Sonar equipment used on some DBM ve
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advocated this approach for environ
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local geology, sedimentology and mi
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Levene’s test could also be used
Page 648 and 649:
unquestionably be alarming, and the
Page 650 and 651:
3.4 Future Innovation in Video Tran
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sponges and bryozoans to more gener
Page 654 and 655:
esearch contributions of Mark Gibbo
Page 656 and 657:
16. Craig R. Smith (1998), The Biol
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magellanicus, Gmein) populations. J
Page 660 and 661:
Page 662 and 663:
presentation he would show that kno
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process of self-regulatory checking
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initial mining, but that within a v
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continental shelf. He suggested tha
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would result in the extermination o
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The participant from Saudi Arabia r
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of the Namibian government would be
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With the exception of the West Paci
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1.3 Resources The oceanic regions o
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2 Physiography of the Ocean Floor a
Page 682 and 683:
INTERNATIONAL SEABED AUTHORITY 674
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partially separated continental fra
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occur beneath the continental shelf
Page 688 and 689:
Using these criteria, a number of a
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3.3 Methods used to assess resource
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4.1.2 How marine placer deposits ar
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to survive the transgression are pr
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4.2.2 Where marine phosphorite depo
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sedimentary layers that are favoura
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4.4 Marine Polymetalic sulphides 4.
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4.4.4 Resource potential of marine
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The most up to date information of
Page 706 and 707:
Manganese crusts that are rich in c
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(3) where bottom currents are effec
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There are four elements are of econ
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averaging 2kg/m 2 . These contain e
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520 million tonnes of copper”. In
Page 716 and 717:
Page 718 and 719:
Page 720 and 721:
Elemental resources for the top ten
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natural gas is commonly formed in a
Page 724 and 725:
These areas are almost exclusively
Page 726 and 727:
Table 5 (with reference to Figure 2
Page 728 and 729:
with the term “resource” used e
Page 730 and 731:
Similarly, much of the continental
Page 732 and 733:
Although this is not an assessment
Page 734 and 735:
A qualitative indication of resourc
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4.7.2 How marine gas hydrate deposi
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However, this does not include the
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Figure 28 shows the location of are
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ELCS region Location Hydrate potent
Page 744 and 745:
Page 746 and 747:
Franklin Seamount, western Woodlark
Page 748 and 749:
Emery K. O. and Noakes L. C., Econo
Page 750 and 751:
Herzig, P.M. and Hannington M. D.,
Page 752 and 753:
Kvenvolden, K.A., Gas hydrates as a
Page 754 and 755:
Meyer, R.F., Speculations on oil an
Page 756 and 757:
Scott, S.D., Seafloor polymetallic
Page 758 and 759:
Evaporite deposits http://www.black
Page 760 and 761:
Page 762 and 763:
these areas cover something like 25
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continental margins. He mentioned p
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programme off Nankeen, Japan, and t
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een happily persuaded in the other
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Part 4 REGULATORY AND PROMOTIONAL F
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own Namdeb. In addition, there are
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The stated purpose of the Minerals
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programme and specified minimum exp
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them to give proper attention to ea
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evaluation purposes in monitoring t
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as far as the development of minera
Page 784 and 785:
Ms. Zaamwani said that the main leg
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Ms. Zaamwani told participants that
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the Ministry could benefit, as is c
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understaffing do not currently util
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One participant recalled that Ms. Z
Page 794 and 795:
vessels there are sophisticated sec
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Ms. Zaamwani was asked about regula
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70° 60° NORTH SEA -30° -20° -10
Page 800 and 801:
of 9.6 billion Sm 3 oil equivalents
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Nor does it give rights or priority
Page 804 and 805:
1 4. Data Management All data relat
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possibility to evaluate the results
Page 808 and 809:
planning of future activities. The
Page 810 and 811:
SUMMARY OF THE PRESENTATION ON THE
Page 812 and 813:
in the Barents Sea there is still a
Page 814 and 815:
period that can last up to ten year
Page 816 and 817:
conditions in these areas, as well
Page 818 and 819:
designated by the Ministry. She sai
Page 820 and 821:
quantity of data involved in the in
Page 822 and 823:
operation (PDO) is normally prepare
Page 824 and 825:
to the data when an area is relinqu
Page 826 and 827:
CHAPTER 20 STATUS REPORT ON THE DAT
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All the above-mentioned minerals oc
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e water depths between 400 and 1,00
Page 832 and 833:
As far as the Government is concern
Page 834 and 835:
• Ordinance number 195, of Decemb
Page 836 and 837:
This tax must be paid up to January
Page 838 and 839:
the one whose burning is authorised
Page 840 and 841:
ANP may send a representative to fo
Page 842 and 843:
esources other than oil or natural
Page 844 and 845:
to the safety of persons and animal
Page 846 and 847:
found offshore Brazil. With regard
Page 848 and 849:
een discovered in the basin, includ
Page 850 and 851:
enhance oil recovery. He said that
Page 852 and 853:
g. Ordinance number 10 that regulat
Page 854 and 855:
He said that the environment has to
Page 856 and 857:
ids. These comprised five Brazilian
Page 858 and 859:
After oil exploration gained moment
Page 860 and 861:
Those who are entitled to the land
Page 862 and 863:
and replaced by the President, and
Page 864 and 865:
(ii) Assure the safety of navigatio
Page 866 and 867:
explorations may continue concurren
Page 868 and 869:
Appoint an authorized representativ
Page 870 and 871:
The contractor will recover all ope
Page 872 and 873:
of US dollar... (negotiable) within
Page 874 and 875:
Processing of products is subject t
Page 876 and 877:
are more than 30 articles in the va
Page 878 and 879:
Page 880 and 881:
Ambassador Djalal informed particip
Page 882 and 883:
production-sharing contracts became
Page 884 and 885:
said that the remainder of the prod
Page 886 and 887:
and cooperation with Pertamina and
Page 888 and 889:
A participant wanted to know whethe
Page 890 and 891:
of CCOP/SOPAC was to promote and de
Page 892 and 893:
STAR was founded in 1985 in collabo
Page 894 and 895:
Since 1972, SOPAC has, on behalf of
Page 896 and 897:
France Seapso 1985-1986 Cook Is, Fi
Page 898 and 899:
polymetallic massive sulphides. The
Page 900 and 901:
crusts have also been found in area
Page 902 and 903:
Figure 2: Location Map of Known Pol
Page 904 and 905:
is currently no regional agency tas
Page 906 and 907:
The types of data that have been in
Page 908 and 909:
A new agreement between Japan and S
Page 910 and 911:
SOPAC’s continuing and relentless
Page 912 and 913:
deposits will be mined at some poin
Page 914 and 915:
REFERENCES 1. D. Tiffin and C Matos
Page 916 and 917:
18. J. Malnic. (1999). Marine Miner
Page 918 and 919:
8. Individual nations should develo
Page 920 and 921:
SUMMARY OF THE PRESENTATION ON THE
Page 922 and 923:
With regard to the name of the orga
Page 924 and 925:
the benefit that had accrued to the
Page 926 and 927:
The discussions that followed Mr. S
Page 928:
About the International Seabed Auth
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Minerals Report - International Seabed Authority

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