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ESR 2001-05

Major- and Trace- Element Geochemistry of Kimberlitic Rocks in Northern Alberta

Samples from the Mountain Lake pipes and the Buffalo Head Hills and Birch Mountains fields contain low SiO2 and Na2O/K2O, with Cr, Ni, MgO, rare-earth elements (REE), Zr and Nb concentrations elevated relative to their abundance in common crustal ... Show Abstract

Eccles, D.R.  Luth, R.W.  2003-05-01

ESR 2000-08

Diamond and Metallic-Mineral Potential of the Peerless Lake Map Area, North-Central Alberta

Abstract: A regional geochemical sampling program for diamond and metallic-mineral potential was completed during the summer of 1998 in the Peerless Lake map area, north-central Alberta. The area encompasses the 1997 discovery of diamondiferous kimberlites on the flanks of the Buffalo Head Hills by Ashton Mining of Canada Inc. and its co-venture's Alberta Energy Company Ltd. and Pure Gold Minerals Inc. The study is intended to provide reconnaissance-scale information from an area with known diamondiferous kimberlites.The regional geochemical survey collected 184 samples, targeting a variety of sampling media: 88 stream-sediment heavy-mineral concentrates; 25 glaciofluvial, or sand and gravel samples; and 1 preglacial sand and gravel sample. More than 2000 silicate and oxide grains were recovered and 1500 picked (definite and possible) silicate minerals were plotted, regardless of chemistry, to study their distribution relationships. In total, 606 grains were selected for quantitative analysis of major- and trace-element chemistry using an electron microscope.The spatial distribution of silicate kimberlite-indicator minerals, particularly peridotitic garnet and olivine, clearly shows four areas with elevated grain counts. Three ''anomalous'' areas occur in the northwestern and north-central parts of the map area, close to known kimberlite clusters. Heavy mineral sampling must therefore, be recognized as a valuable exploration tool in other areas of Alberta that are similarly covered with complex surficial deposits of glacial origin. A fourth anomalous area, located in the southwestern part of the area, is characterized by a wide distribution of elevated grain counts. While glaciofluvial samples contain a large number of indicator minerals, high indicator-mineral grain counts are generally independent of sample media. The distribution patterns of indicator grains in areas of known kimberlite occurrences are generally close to the kimberlite source. Place Keywords 84b alberta otter lake peerless lake sawn lake whitefish tower Theme Keywords chrome diopside chrome spinel clinopyroxene diamond garnet gravel indicator mineral kimberlite metal olivine sand

Eccles, D.R.  Haynes, M.  Csanyi, W.  2001-08-01

ESR 2005-01

Geochemical Orientation Surveys (Fiscal Year 2000-2001) for Kimberlites in Northern Alberta

Geochemical Orientation Surveys (Fiscal Year 2000-2001) for Kimberlites in Northern Alberta In northern Alberta, indicator mineral analysis may not be effective for detecting kimberlites because kimberlites are decoupled from streams draining ... Show Abstract

Seneshen, D.M.  Grunsky, E.  Rencz, A.  Hall, G.E.M.  Dunn, C.E.  2005-02-01

ESR 2005-05

Regional Stratigraphic Framework of Buffalo Head Hills-Peerless Lake Region, Northern Alberta

The Buffalo Head Hills-Peerless Lake (BHH-PL) region in northern Alberta is well known for its prolific oil and gas production. During the Paleozoic, the BHH-PL region was a shallow shelf to basinal marine setting and dominated by carbonate, shale ... Show Abstract

Chen, D.  Olson, R.A.  2005-12-23

ESR 2002-07

Petrographic Characteristics of Selected Kimberlitic Rocks in Northern Alberta

Five kimberlite pipes in the northern Alberta kimberlite province were selected for detailed petrography: K4 and K6 from the Buffalo Head Hills and Legend, Phoenix and Kendu from the Birch Mountains. The main objective is to complement and expand ... Show Abstract

Eccles, D.R.  2004-02-01