43-101 2009 Technical Report On The San Antonio Project, Baja ...

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PEDIMENT GOLD CORP.10. Mineralization10.1. Los Planes and Las ColinasMineralization at Las Colinas and Los Planes is very similar, with the exception of thedimensions of the mineralized bodies and level of oxidation. The main mineralized body isconfined to a cataclasite to mylonite unit that varies in width from 25 to 35 metres at LasColinas. At Los Planes, there are several sub-parallel cataclasite to mylonite zones thattogether form a broad zone that is up to 100 metres in width. The cataclasite unit has aroughly north-south strike and dips about 45 degrees to the west in both Las Colinas andLos Planes. Coyan et al. (2007) interpreted that cataclasite was a good host formineralization because of its highly fractured nature, but mineralization is not restricted tothe cataclasite. Instead mineralization and alteration occur in many rock types, as long asbrittle fractures are present including stockwork. Typically, the cataclasite contains a zonewhere sulphides increase with abundance to as high as 20%. Pyrite appears as the mostcommon sulfide throughout the system; however the main zone of mineralization is seenwith an increase of arsenopyrite and pyrite in addition to minor pyrrhotite and chalcopyrite.Sulphides are present in brittle structures including cracks, faults, joints and microfractures.Pyrite lines the walls of many fractures and joints as observed from core andoutcrop. The alteration ranges from chlorite dominant around the cataclasite changing tosericite-dominant within the cataclasite or mylonite units. Chemically, the system has lowsilver relative to gold, having Ag/Au ratio of around 0.4 and seldom above 1:1. Gold is alsoaccompanied by anomalous As, Bi and weakly anomalous copper.Some mineralized zones are believed to have been controlled or were fed by hydrothermalfluids along sub-vertical structures or conduits occurring as north-south trending structures.These structures will require additional detailed drilling to confirm their presence.Colinas drill logs of the 18 drill holes in the deposit by EBX have no specific quantificationof the oxide zone; except a numeric indicator of the “type of oxidation”. Pediment coredrilling has allowed a more refined characterization of the depth of oxidation in the Colinasdeposit. Most of the drill holes were testing nearer surface mineralization.Surface oxidation of the sulphide bearing deposits has progressed to about 100 metresdepth below the present surface in the Planes deposit and about 25-35 metres in the Colinasdeposit. Echo Bay reports and recent technical reports by Vista Gold describing the geologyof the Paredones deposit state that deposit has only about 5-10 metres of oxidation.The explanation for the depth of oxidation being greater at Planes is due to several causesthat are interrelated. The covering of the Planes deposit by pediment cover effectivelyremoved it from active erosion. Much of the oxidized material of the mineral deposit isvery soft due to the leaching of sulphides and mineralized areas probably would haveeroded easily and rapidly if exposed. The second factor promoting deeper oxidation is the
PEDIMENT GOLD CORP.open fracture breakage of the deposit caused by the young listric faulting episodeassociated with the graben basin formation led to deeper penetration by oxygen bearingsurface water. These listric faults opened the rock increasing permeability and subsequentaccess by more oxygen carried by sub-surface waters with deeper water table flow. Theseopening routes produced more rapid oxidation carrying out sulfur and possibly arsenic indeeper penetrating groundwater.
Page 1 and 2: TECHNICAL REPORT AND RESOURCE UPDAT
Page 3 and 4: 12.6 La Colpa Zone Exploration Wink
Page 5 and 6: LIST OF FIGURESFigure 4.1 View of t
Page 7 and 8: PEDIMENT GOLD CORP.Table 1.1Summary
Page 9 and 10: PEDIMENT GOLD CORP.3. Reliance on O
Page 12 and 13: PEDIMENT GOLD CORP.Geronimo-Mirador
Page 15 and 16: PEDIMENT GOLD CORP.6. Mining Histor
Page 17 and 18: PEDIMENT GOLD CORP.consist of an ad
Page 19 and 20: PEDIMENT GOLD CORP.7. Geological Se
Page 21 and 22: PEDIMENT GOLD CORP.texture outcrop
Page 23: PEDIMENT GOLD CORP.A thin mantling
Page 26 and 27: PEDIMENT GOLD CORP.Trends of the la
Page 28 and 29: PEDIMENT GOLD CORP.9. Deposit Types
Page 30 and 31: PEDIMENT GOLD CORP.The estimates of
Page 34 and 35: November 2009
Page 36 and 37: PEDIMENT GOLD CORP.11.2. Geochemist
Page 38 and 39: PEDIMENT GOLD CORP.50 meter dipoles
Page 40 and 41: PEDIMENT GOLD CORP.Outcrops are com
Page 42 and 43: PEDIMENT GOLD CORP.12. Drilling By
Page 44: PEDIMENT GOLD CORP.The core drill r
Page 47 and 48: PEDIMENT GOLD CORP.12.5. Las Colina
Page 49 and 50: PEDIMENT GOLD CORP.13. Sampling Met
Page 51 and 52: PEDIMENT GOLD CORP.15. Sampling and
Page 53 and 54: PEDIMENT GOLD CORP.Table 15.30 Twin
Page 55 and 56: PEDIMENT GOLD CORP.to 67.7% for hig
Page 57 and 58: PEDIMENT GOLD CORP.The column leach
Page 59 and 60: PEDIMENT GOLD CORP.18. Current Mine
Page 61 and 62: PEDIMENT GOLD CORP.Figure 18.3: Log
Page 63 and 64: PEDIMENT GOLD CORP.a model so the m
Page 65 and 66: PEDIMENT GOLD CORP.12 were used. Fi
Page 67: PEDIMENT GOLD CORP.For the well dri
Page 71 and 72: PEDIMENT GOLD CORP.Table 18.12: SAN
Page 77 and 78: PEDIMENT GOLD CORP.19. Conclusions
Page 79 and 80: PEDIMENT GOLD CORP.Recommended Prog
Page 81: PEDIMENT GOLD CORP.Stephens, J., an
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APPENDIX ISAN ANTONIO COLLAR LOCATI
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SAN ANTONIO REVERSE CIRCULATION DH
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APPENDIX IISUMMARY OF RESULTS
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++APPENDIX II:SUMMARY OF RESULTSInt
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2008 Scatter Au (ppm)141210Au (ppm)
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San Antonio ProjectSTD Analysis Per
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San Antonio ProjectBlank Analysis P
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