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Sampling & Assaying Expl Prog Pakeagama Lk Area Rare

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Sampling & Assaying Expl Prog Pakeagama Lk Area Rare 53C11SW2005 2.23023 PAKEAGAMA LAKE 010 SAMPLING AND ASSAYING EXPLORATION PROGRAMME on the PAKEAGAMA LAKE RARE EARTH PEGMATITE Red Lake Mining Division NTS 53C/1 i (52"36*30"N: 93*24© Wi. Ontario for Houston Lake Mining Inc. RECEIVED FEB 202002 GEOSCIENCE ASSESSMENT OFFICE K ft-W- R. Ken Gcrmundsom PhD in Geology February 18, 2001 Member: Association of Geoscientists of Ontario E. Gravme Anthony, BSc in Geology P. Geo., J. G. A, C., M. B. A., President of Houston Lake Mining Inc. TABLE OF CONTENTS SUMMARY 1 INTRODUCTION AND TERMS OF REFERENCE 5 ACKNOWLEDGEMENTS 5 PROPERTY DESCRIPTION, LOCATION AND ACCESSIBILITY 8 MINING CLAIMS SUMMARY 9 CLIMATE, LOCAL RESOURCES AND PHYSIOGRAPHY 11 HISTORY 12 GEOLOGICAL SETTING 13 REGIONAL GEOLOGY 13 PAKEAGAMA LAKE PLUTON 15 HOLMQUISTITE GRANITE 15 PAKEAGAMA LAKE PEGMATITE 17 Wall Zone 17 North Wall Zone 19 South Wall zone 19 Core Zone 19 Stacked Aplite Zone 20 K-Feldspar-Spodumene-Quartz Zone 20 Aplite Dikes 21 DEPOSIT TYPES 22 Rare Element Pegmatites 23 Internal Structure of Pegmatites 26 Mineral indicators of Rare Metal Mineralization 26 Geochemical Trends 27 Ore Deposits 27 MINERALIZATION 29 EXPLORATION 31 North Wall Zone 32 South Wall Zone 37 Core Zone 38 Stacked Aplite Zone 39 K-Feldspar-Spodumene-Quartz Zone 42 Aplite Dikes 42 Holmquistite Granite 43 INTERPRETATION AND CONCLUSIONS 45 RECOMMENDATIONS 47 PROPOSED BUDGET FOR 2002 48 ASSESSMENT EXPENSES 49 APPENDIX 50 Metals in the Pakeagama Lake Pegmatite 51 Tantalum 51 Niobium 54 Gallium 55 Rubidium 56 Cesium 57 Lithium 58 Germanium 59 Tin 59 Beryllium 59 Thallium 59 REFERENCES AND SELECTED BIBLIOGRAPHY 61 CERTIFICATE 63,64 FIGURES 1- Geology and Principal Minerals of Ontario (Location) 6 2- Ontario Road Map (Location) l 3- Pakeagama Lake: Claims 10 4- Regional Setting of the Pakeagama Lake Pegmatite 14 5- Local Geology and Claims 16 6- Detailed Geology of the Pakeagama Lake Pegmatite 18 TABLES 1 -The four classes of granitic pegmatite 22 2- Classification of pegmatites of rare earth class 23 3-The three families of rare-element pegmatites 24 4-Production reserves of some pegmatite deposits 28 5- Geochemical check analyses, channels 1 and 2 XRAL Laboratories. (North Wall Zone) 33 6- Geochemical analyses for channels 1 and 2 samples Activation Labs. (North Wall Zone) 35 7- North Wall Zone assay results (Ontario Geological Survey). 36 8- Geochemical analyses of samples collected from channels 5, 6 and 7 (Activation Labs.) (South Wall Zone) 20 9- Stacked Aplite Zone assay results (Channel 14, figure 6) Ontario Geological Survey 39 10- Stacked Aplite - Geochemical analyses Activation Laboratories 40 11- Feldspar-Spodumene Quartz Zone and Aplite Dikes Activation Laboratories 42 12- Holmquistite Granite, Activation Labs 44 l SAMPLING AND ASSAYING EXPLORATION PROGRAMME on the PAKEAGAMA LAKE RARE EARTH PEGMATITE Red Lake Mining Division NTS 53C/11 f52"36©30"N: 93*24*WK Ontario for Houston Lake Mining Inc. SUMMARY The Pakeagama Lake Property of Houston Lake Mining Inc. is located 160 kilometres north of Red Lake, Ontario and is in the Red Lake Mining Division. Three claims, KRL 1166872 and KRL 123441 and 1233616, each composed of 16 claim units or 256 hectares, make up the property. Claim KRL 1232441 is IQQP/o owned by Houston Lake Mining Inc; KRL 1166872 is under option from John Gregory Brady of Sudbury, Ontario. Houston Lake Mining Inc has the right of first refusal on claim 1233617, which is held by Emerald Fields Resources Corporation. All are subject to a 2 Yz 07o net smelter return. The Pakeagama Lake Pegmatite is located at the boundary between the Berens River and Sachigo Subprovinces of the Canadian Shield. The boundary between the subprovinces is defined by the regionally significant., Bear Head Fault. The fault has controlled the emplacement of the elongate, Pakeagama Lake peraluminous (the aluminum content is greater than the combined content of sodium, potassium and calcium) granite, which is situated within sequences of metavolcanics and metasediments that fie along the fault. The Pakeagama Lake Granite is defined as a fertile granite, that is, the granite is a potential source of the rare earth elements found in the Pegmatite. The Pakeagama Lake Pegmatite is located in the northwesternmost part of the peraluminous granite. It is a complex, petalite subtype pegmatite, which is divided into five distinct zones: Wall, Core, Stacked Aplite, Potassic Pegmatite and K-Feldspar- Spodumene-Quartz zones. The following elements (assay values converted to oxides) occurring in the pegmatite are of interest: * Lithium oxide - 13.9 metres of channel sampling at 4.50+^/0 in the Core Zone (sampling by both Houston Lake Mining Inc. and the Ontario Geological Survey) 2 and 8 metres of L.77% in the Stacked Aplite Zone (sampling by the Ontario Geological Survey). The greatest tantalum oxide (Ta2Os) values in the Stacked Aplite Zone (ranging generally above 130 parts per million and as much as 168 parts per million) tend to be closer to the contact of the zone with either the iron formation or a granitic roof pendant. Tin values tend to follow tantalum values in a rough fashion with a spike of 1259 ppm at the contact with the iron formation and another spike of 2044 ppm at the contact with the granitic roof pendant. The Ontario Geological Survey collected 11 one-metre long channel samples from the North Wall Zone during their study of the Pakeagama Pegmatite. During the present study, a duplicate and parallel sample was cut immediately adjacent to that one cut by the OGS. Comparison results for the average tantalum oxide and cesium oxide content are as follows. Ont. Geol, Survey 285g7t Ta2O5 and 967g7t Cs2O Houston Lake - from Activation Labs 172g7t Ta2O5 and 933g7t CsjO XRAL Labs - check on Activation Labs 182g7t Ta2O5 and 930g7t Cs2O Although cesium oxide values compare favourably between the laboratories, the XRAL and Activation results for tantalum oxide are considerably lower than those obtained by the Ontario Geological Survey. The tantalum oxide values are significant when the collective economic impact of all the rare earth elements contained in the Pakeagama Pegmatite is considered. Other tantalum areas not tested include: a) late sodic metasomatism in the form of late replacement bodies less than a metre thick assay between 500 and 600 ppm Ta2Oj (OGS) occur in the North Wall Zone; b) a tantalum-bearing aplite to 30 cm thick is present about 300 metres east of the the pegmatite on the shore of Pakeagama Lake assayed 600 and 700 ppm Ta2O3 (OGS). Berylfiuin, as beryl (semi-translucent to transparent, porpyritic crystals of goshenite and morganite), occurs in values up to 1060 ppm. Rubidium concentrations in the two feldspar-rich zones reach as high as t.1% (OGS) and were not evaluated in the present work. Overall cesium oxide content averaging 883 ppm in two channels of the North Wall Zone. * A 160 metre long cesium anomaly has been outlined in a holmquistite (lithium- bearing mineral) granite that parallels the pegmatite along its southwest flank. A pollucite-bearing (cesium mineral) dike is present within the anomaly in the granite. During the period May to July, 2001,an exploration programme of line cutting, ground geophysics, overburden removal and channel and chip sampling was carried out on the Pakeagama Lake Property of Houston Lake Mining Inc. This report describes the work undertaken on the Pakeagama Pegmatite, which includes the channel sampling and geochemical (assay) results for the associated minerals (for instance: tantalum, cesium, rubidium, gallium tin, thorium, germanium and niobium). The Core Zone samples were assayed for lithium alone. The check assays (North Wall Zone) by XRAL included lithium and strontium. The Ontario Geological Survey has previously carried out detailed studies of the Pakeagama Pegmatite. G. Anthony, P. Geo., F.G.A.C., President of Houston Lake Mining, Inc., added further perspective in a July, 2000 report. Both parties mapped the pegmatite. The exploration concept, which suggests that the Pakeagama Pegmatite is an important rare earth element-bearing entity is indicated by the following: 1. The high rubidium content of the potassium(K)-feldspars approaches that of the Tanco Pegmatite, l Rb:4.5-5.0 K (versus the average granitic concentration of lRb:250 K indicates that fractional crystallization has been highly effective in concentrating the rare metal content at Pakeagama Lake. 2. Plots of Rb/K ratios to Cs from Pakeagama Lake fall within the Bernic Lake field, which contains the Tanco pegmatite. 3. "The detailed documentation of 7 varieties of tantalum minerals and a high concentration of tantalum relative to niobium (Ta:Nb averages 3: l compared to a crustal abundance of l: 11.4) as shown by electron microprobe studies reported by the OGS. This coupled with the presence of pollucite renders the Pakeagama Lake pegmatite and adjoining area one of the best exploration targets for tantalum and cesium in northwestern Ontario" (F. Breaks, A. Tindle, and S. Smith, 1999b, p.26-6). 4. "Tourmaline in petalite-subtype pegmatites from the Pakeagama Lake area suggests that the main pegmatite units were little affected by interaction with host rocks (i.e. they crystallized in a closed system). This has implications for concentrating rare-elements such as Rb and Cs, which otherwise would be dispersed throughout pegmatite and host rocks. The potential for a buried pollucite orebody associated with the SE trending pegmatite at Pakeagama Lake increases as a result of these observations (Abstract, tindle et al, 2000, in press). 5. The large size of the Pakeagama Lake Pegmatite (up to 125 metres wide over an exposed strike length of 280 metres combined with the high rare metals content indicates a potential for an economic deposit Large areas of the Pakeagama Lake Pegmatite were exposed by washing bedrock by the Ontario Geological Survey; and Houston Lake Mining Inc.
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