Exploration for porphyry-style copper mineralisation near Llandeloy

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Borehole 8 (diameters of core 9-72 m, 50 mm; 72-124 m, 25 mm) Depth - Depth
Table A4.2 Density and Porosity Determinations on Core Samples Rock Type Borehole Depth N Satd. Dry Grain Eff. No. m. Dens. Dens. Dens. Poros. gcm-3 g cm-3 g cm-3 % Porphyritic microtonalite Porphyritic microtonalite Porphyritic micro tonalite Mean Tonali te Tonali te Mean Quartz microdiorite Quartz microdiorite Mean Mean of intrusive rocks Acid volcanic1 Sands tone Sandstone Sandstone Sandstone Siltstone/sandstone Siltstone Mean of sedimentary rocks 1 All volcanic rock samples were from the weathered zone
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Natural Environment Research Counci
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Report No. 78 @ Crown copyright 198
Page 9 and 10:
SUMMARY REGIONAL STUDIES Intrusive
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SUMMARY Geological, geochemical and
Page 13 and 14:
concluded that except for Zn the re
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The only rock containing evidence o
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Table 3 Analyses of miscellaneous r
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- 28 St. Brides Bay -
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Hercynian orogenies (M. 3. Arthur,
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Figure 14 Location of soil anomalie
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producing a very limited dispersion
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-1 00- Contours of VLF horizontal i
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area and periglacial and glacial de
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the Brunel Beds or the Tetragraptus
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contains sparse subhedral plagiocla
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There is some variation in the alte
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The cause of other isolated weak Cu
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j Table 9 Summary of analyses of in
Page 42 and 43:
increase the Zr content. The divisi
Page 44 and 45:
variation between pu8M microdioritn
Page 46 and 47: T/I~~/~~IPYS openjoi~~tcd limestone
Page 48 and 49: Table 13 Summary statistics for sed
Page 50 and 51: than average values quoted for sand
Page 52 and 53: Introduction The main geophysical m
Page 54 and 55: Figure 42 Contour map of apparent r
Page 56 and 57: Figure 45 Contour map of tow magnet
Page 58 and 59: Pigum? 47 Cumulative f reguency plo
Page 60 and 61: it to this late propylitic alterati
Page 62 and 63: HOLWSTER, V.F. 1974. An appraisal o
Page 64 and 65: APPENDIX 1 ABBREWATEI) BOREHOLB LOG
Page 66 and 67: BOREHOLE 2 Registration Number STvI
Page 68 and 69: BOREHOLE 3B Registration Number SM
Page 70 and 71: BOREHOLE 5 Registration Number SM 8
Page 76 and 77: SANDSTONE: as above CLAY GOUGE: SAN
Page 78 and 79: --- APPARENT ESISTIVITY pa IN OHM M
Page 80 and 81: APPARENT ESISTMTY H Bbs ys 06 q6 CH
Page 82 and 83: z ~ l ~ ~ ~ l ~ l . ~ l ~ , ~ l l A
Page 84 and 85: z ~ 1 ~ 1 ~ 1 ~ 1 ~ 1 APPARENT FEJS
Page 86 and 87: z ~ l $ l l l l l ~ l l ~ l l l l ~
Page 88 and 89: MAGNETIC FELD IN NAFTESLA Y /-*-.-.
Page 90 and 91: !IN@ a 8 g e s s I! s F N : , S ? I
Page 92 and 93: ~ N & E e 8 g B 8 8 7 a F N . S ~ 9
Page 94 and 95: PHYSICAL PROPERTY MEASUREMENTS ON B
Page 98 and 99: APPENDIX 5 COMPUTER MODELLING OF AE
Page 101 and 102: RMS RESID - 6.53 FLU. PT ELEV ORS n
Page 103 and 104: MRGNET I C: TIJTERF'HFTAT 1014 . .
Page 105 and 106: ANU.YSB OF BOLPROLB CORE& TRACE ELE
Page 107 and 108: . Sample BH , Depthv ,(m); -, - . ~
Page 109: . , I , . . . . .. . , . , '," . ',
Page 112 and 113: Fig.7 Aeromagnetic anomaly map of t
Page 115 and 116: \ Fig.13. Compilation map of resist
Page 117 and 118: Q Q E C E CCt C E Ct C Q Ct CtQ C Q
Page 119 and 120: !2 CO N A 4 ul o ~n o ul 0 DEPTH IN
Page 121 and 122: Fig.25 BOREHOLE 5 C C C C Ct C E K
Page 123 and 124: Fig.27 BOREHOLE 7 E Q C Q E C 0 Q E
Page 125: 81 82 83 84 Fig.30. : Location of c
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Exploration for porphyry-style copper mineralisation near Llandeloy

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