Malawi NI 43-101 - December 2011 - Gold Canyon Resources Inc.
Malawi NI 43-101 - December 2011 - Gold Canyon Resources Inc. Malawi NI 43-101 - December 2011 - Gold Canyon Resources Inc.
current exploration begun in August of 2011 under the direction of H. Harada of MINDECOon behalf of Gold Canyon.24(b) Mineralized zones, rock types, controls, length, width, depth and continuity ofmineralization. Description of type, character, and distribution of mineralization.The REE mineralization in the Chambe Basin is so far known only from a very smallnumber (total 25) of soil and rock samples collected on several days of reconnaissancesampling, mostly from road cuts along old forestry tracks. The controls on mineralizationand the vertical and horizontal extent of the mineralization are therefore unknown atpresent, and the principal objectives of the current exploration program of systematicdrilling and detailed sampling being carried out by MINDECO are to document the REEmineralizedmaterial and investigate the distribution of the REE in the soil profile, the sizeand grade of any resource, and the recoverability of the REE.An indication of the size of the soil mantle over the central syenite plug in ChambeBasin is given by the work of Garson and Walshaw (1969, Plate X), who mapped the basinand described the soils from 69 pits ranging in depth from 5 feet to 50 feet (1.5 to 15.2 m).A contoured map of thickness of the soils from the pit data reported by Garson andWalshaw (1969) is shown as Figure 10. Garson and Walshaw described the deposits asmainly kaolinitic, with bauxite only in small patches, and the following summary of the soilprofiles is derived from their account (with inferred standard soil horizons A to C added).Weathered rock (C soil horizon?) immediately above the bedrock syenite plug maypreserve the texture of the parent syenite, may also contain fragments of feldspar,amphibole and biotite and is mainly white, with pink, yellow and black mottling. The mottlingincreases upward and red, pink and purple colours predominate, and in the upper parts (Bsoil horizon?) the soil is red-brown and only quartz from the weathered syenite survives. Ayellowish-brown subsoil is locally present and the uppermost soil (A soil horizon?) containshumus and is dark grey to black and rooty.The possibility that the Mulanje Mountain area might contain REE deposits of theion-adsorption type was proposed by Ishikawa (2010), a geologist from the JapanInternational Cooperation Agency currently working with the Geological Survey of Malawi inZomba. Ishikawa collected 8 samples (Table 2) from Chambe Basin in September of 2010.
25The following year, on May 22-23 of 2011, a group of 7 geologists from MINDECO,JOGMEC and the Geological Survey of Malawi collected 16 samples at 9 sites (Table 3)including 13 soil samples from 6 sites and 3 rocks.It should be noted that only a small number of samples have been analyzed so far,that these are scattered over a large area, and that most are shallow (generally less than 3m) relative to the deep soils (Figure 10) reported by Garson and Walshaw (1969).Analyses (Table 4) of 3 “kaolinitic” samples (Table 2) collected by Ishikawa indicatedthese soils contain from 475 to 739 ppm total REE of which 31% to 74 % is easilyleachable(41% to 86% if Ce is excluded). Subsequent “weathered rock” samples taken byMINDECO, JOGMEC and Geological Survey of Malawi were found to contain (Table 5 and6) between 198 and 642 ppm total REE, and recoveries by leaching were in the range 0.1to 30% (38% if Ce is excluded), with 8 of 13 samples having 5% or less of their total REEleachable. This high variability of recovery of REE and the lower % of recovery than theIshikawa samples was considered by JOGMEC as possibly due to natural variability orperhaps to differences in leaching chemistry or methods between the earlier analyses(Nittetsu Lab) and the later analyses (Mitsui Lab). However, as an inter-laboratory checktwo original Ishikawa samples were leached by the Mitsui Lab and these show fairagreement in % of leached REE (see Table 7, 66% vs 74% for CHA-4 and 56 % vs 70% forCHA-6). This result suggests the methods produce comparable results and therefore implya fair degree of natural variability. These analyses show that Ce is 13 to 32% of the totalREE in the soils, but only 1 to 16% of the leachable REE, suggesting that Ce occurs in adifferent form than other REE, an observation that is consistent with studies of ionadsorption deposits elsewhere.Samples were collected by the author from Chambe Basin on 22-23 of August of2011 from 11 sites (Table 8) for verification purposes and are discussed in Item 12. Manyof these samples were taken as checks at sites originally sampled by Ishikawa, and theauthor is also grateful to J. Ishikawa for providing 3 of his original samples for re-analysis(see Table 9 under Item 12). Re-analysis of these samples has essentially confirmed hisinitial reports that the Chambe Basin may contain a REE deposit of the “ion-adsorption claytype “.
- Page 1 and 2: Geological reporton theCHAMBE BASIN
- Page 3 and 4: 3List of FigurespageFig 1 Relations
- Page 5 and 6: 51 SUMMARYProperty Description Cham
- Page 7 and 8: 7Relationships between companies in
- Page 9 and 10: 9Figure 3. More detailed map of Mal
- Page 11 and 12: 11(b) Purpose of reportAccording to
- Page 13 and 14: Figure 8 General geology of the Mul
- Page 15 and 16: 154 PROPERTY DESCRIPTION AND LOCATI
- Page 17 and 18: 17JOGMEC to Spring Stone Limited by
- Page 19 and 20: 19be required, and also a “Licenc
- Page 21 and 22: 21(d) Climate, length of operating
- Page 23: 23(c) Significant historical minera
- Page 27 and 28: Table 2 Samples collected by J. Ish
- Page 29 and 30: Table 4 REE analyses of 3 leached s
- Page 31 and 32: Table 6 REE recovered from leach li
- Page 33 and 34: 337D Individual REE composition of
- Page 35 and 36: 35(such as apatite or the barium al
- Page 37 and 38: 376 U and Th, which are generally a
- Page 39 and 40: 9 EXPLORATIONReconnaissance samples
- Page 41 and 42: 41(c) Quality control procedures.Th
- Page 43 and 44: 43leach gives much lower values (se
- Page 45 and 46: TABLE 9 Analyses of REE in 3 Ishika
- Page 47 and 48: CHA-4ppm20015010050ISHMINPCL0La Ce
- Page 49 and 50: Table 11 Results of leaching REE fr
- Page 51 and 52: Table 14 Soils analyzed by Ishikawa
- Page 53 and 54: 53Table 14 c REE leached from soil
- Page 55 and 56: 4 Nature of soilsTwo samples (E6869
- Page 57 and 58: 57Figure 15. Photomicrograph of sam
- Page 59 and 60: Figure 17. Xray diffraction scan of
- Page 61 and 62: 61Figure 19. Polished slab 40 mm lo
- Page 63 and 64: 63Figure 21 Photomicrograph of syen
- Page 65 and 66: 65profiles have well developed lowe
- Page 67 and 68: 67transporting material and people
- Page 69 and 70: 69boundaries. Pits and trenches wil
- Page 71 and 72: 71REFERENCESAnders, E., Grevesse, N
- Page 73 and 74: -lDATE AND SIGNATURE PAGEl, Peter C
25The following year, on May 22-23 of <strong>2011</strong>, a group of 7 geologists from MINDECO,JOGMEC and the Geological Survey of <strong>Malawi</strong> collected 16 samples at 9 sites (Table 3)including 13 soil samples from 6 sites and 3 rocks.It should be noted that only a small number of samples have been analyzed so far,that these are scattered over a large area, and that most are shallow (generally less than 3m) relative to the deep soils (Figure 10) reported by Garson and Walshaw (1969).Analyses (Table 4) of 3 “kaolinitic” samples (Table 2) collected by Ishikawa indicatedthese soils contain from 475 to 739 ppm total REE of which 31% to 74 % is easilyleachable(41% to 86% if Ce is excluded). Subsequent “weathered rock” samples taken byMINDECO, JOGMEC and Geological Survey of <strong>Malawi</strong> were found to contain (Table 5 and6) between 198 and 642 ppm total REE, and recoveries by leaching were in the range 0.1to 30% (38% if Ce is excluded), with 8 of 13 samples having 5% or less of their total REEleachable. This high variability of recovery of REE and the lower % of recovery than theIshikawa samples was considered by JOGMEC as possibly due to natural variability orperhaps to differences in leaching chemistry or methods between the earlier analyses(Nittetsu Lab) and the later analyses (Mitsui Lab). However, as an inter-laboratory checktwo original Ishikawa samples were leached by the Mitsui Lab and these show fairagreement in % of leached REE (see Table 7, 66% vs 74% for CHA-4 and 56 % vs 70% forCHA-6). This result suggests the methods produce comparable results and therefore implya fair degree of natural variability. These analyses show that Ce is 13 to 32% of the totalREE in the soils, but only 1 to 16% of the leachable REE, suggesting that Ce occurs in adifferent form than other REE, an observation that is consistent with studies of ionadsorption deposits elsewhere.Samples were collected by the author from Chambe Basin on 22-23 of August of<strong>2011</strong> from 11 sites (Table 8) for verification purposes and are discussed in Item 12. Manyof these samples were taken as checks at sites originally sampled by Ishikawa, and theauthor is also grateful to J. Ishikawa for providing 3 of his original samples for re-analysis(see Table 9 under Item 12). Re-analysis of these samples has essentially confirmed hisinitial reports that the Chambe Basin may contain a REE deposit of the “ion-adsorption claytype “.
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