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SPE 015

Petrography of the Mountain Lake Pipe, Grande Prairie Area, Alberta, Canada

Twelve samples rich in altered juvenile olivine from the Mountain Lake Pipe (holes ML95-1 and ML95-3) were studied for texture and mineralogy. Contrary to an earlier interpretation that Mountain Lake Pipe rocks are entirely extrusive crater-facies ... Show Abstract

Skupinski, A.  Langenberg, C.W.  2002-03-01

SPE 007

Regional Evaluation of the Coal Bed Methane Potential in the Plains and Foothills of Alberta, Stratigraphy and Rank Study

Regional Evaluation of the Coal Bed Methane Potential in the Plains and Foothills of Alberta, Stratigraphy and Rank Study The coal resource in place in Alberta is tremendous by whichever estimate is used. The geologic model developed for the ... Show Abstract

Rottenfusser, B.  Langenberg, C.W.  Mandryk, G.B.  Richardson, R.J.H.  Fildes, B.J.  Olic, J.  Stewart, S.A.  Eccles, D.R.  Evans, C.  Spelrem, M.  Sprecher, B.  Brulotte, M.  Gentzis, T.  Wynne, D.A.  Yuan, L.P.  1999-02-01

SPE 055

Petrography of Ardley Coals, Alberta - Implications for Coalbed Methane Potential

The seams were sampled at mine sites west of Edmonton (Genesee, Highvale, Whitewood) and from outcrop sections in the Red Deer Valley, east of Red Deer. The seams were sampled 1) by full seam channel samples, which were subsequently analyzed by ... Show Abstract

Kalkreuth, W.D.  Langenberg, C.W.  2002-12-01

BUL 045

Polyphase Deformation in the Canadian Shield of Northeastern Alberta

Two generations of structures can be distinguished in the granite gneisses and intercalated high-grade metasediments of the basement neiss complex, which has been shown to be Archean by radiometry dating. In some areas, D2 folds form parts of domes ... Show Abstract

Langenberg, C.W.  1983-01-01

BUL 056

Deformed Lower Cretaceous coal-bearing strata of the Grande Cache area, Alberta

The Lower Cretaceous Luscar Group includes a thin basal conglomerate (Cadomin Formation), a predominantly non marine sandstone and shale unit that locally contains coal (Gladstone Formation), a shallow marine shale and sandstone unit (Moosebar ... Show Abstract

Langenberg, C.W.  Kalkreuth, W.D.  Wrightson, C.B.  1987-01-01

BUL 042

Polyphase Metamorphism in the Canadian Shield of Northeastern Alberta

During the Archean metamorphic cycle, metasediments were metamorphosed under high pressure granulite conditions (M1). Coexisting garnet-biotite and garnet-cordierite pairs in the metasediments allows estimation of P-T conditions during the ... Show Abstract

Langenberg, C.W.  Nielsen, P.A.  1982-01-01

ESR 2002-05

Regional Evaluation of the Coalbed Methane Potential of the Foothills/Mountains of Alberta (Second Edition)

Regional Evaluation of the Coalbed Methane Potential of the Foothills/Mountains of Alberta (Second Edition) The potential gas content of all shallow coal zones totals about 878 x 109m3 (31 Tcf)1 of CBM, which is considered an inferred, initial, ... Show Abstract

Langenberg, C.W.  Beaton, A.P.  Berhane, H.  2002-10-01

ESR 2000-03

Remnants of (Possibly Diamondiferous) Ultramafic Igneous Rocks in Bedrock of the Kakwa/Wapiti area, West Central Alberta

Abstract: Bedrock sampling at 23 sites, heavy mineral separation and microprobing confirmed that indicator minerals of ultramafic igneous rocks are present in Cretaceous bedrock of the Wapiti area (NTS 83L). Indicator minerals among 74 heavy mineral grains obtained from these samples include: eclogitic garnet, picro chromite (chromite geochemically similar to diamond inclusion chromite), chrome diopside and picro ilmenite. In addition, some of the non-diamond inclusion chromites are similar in composition to chromites found in diamondiferous lamproites from Argyle in Australia. Para-magnetic heavy minerals (>3.3 SG) from several of these samples were mounted on polished thin sections and microprobed, resulting in an additional 140 chromite and 50 garnet analyses. These analyses confirmed the presence of diamond inclusion chromites and eclogitic garnet (Group 5). In three of these thin sections kyanite was found. Indicator minerals can be easier described petrographically in thin section than as rough grains under the binocular microscope.A supplementary study of thin sections from fist size samples at the same sample sites show that tiny chromite and garnet grains (generally smaller than 0.2 mm) can be recognized in thin section. A total of 90 chromite and garnet grains from 7 sample sites were microprobed and can be compared to the analyses from grains separated after crushing a 25 kg sample. The mineralogy of the heavies is similar to the ones separated from the rock and include one diamond inclusion chromite, chromites similar in composition to those found in the lamproites of Argyle (Australia) and Group 5 eclogitic garnets.The indicator minerals were generally from the Upper Cretaceous Brazeau Formation, but they also include one diamond inclusion chromite from the lower Cretaceous Gates Formation. All of these minerals indicate possible local ultramafic diatremes (which could include diamondiferous ones), because the general provenance of the clastics in these sediments is from the west. The Buffalo Head Hills area or the NWT can not have been a source, because these are situated in the east. However, finding these ultramafic diatremes is a continuing challenge for explorationists in west-central Alberta.Another conclusion is that 25 kg samples, used in this study, will procure many heavies, which for economic reason could not all be micro-probed. Place Keywords 83l alberta wapiti Theme Keywords bedrock cretaceous diamond diamond indicator minerals heavy minerals

Langenberg, C.W.  Skupinski, A.  Beaton, A.P.  2000-01-01

ESR 1984-07

Fitzgerald, Tulip-Mercredi-Charles Lakes district, Alberta

A major structural feature in the Slave Granitoid body, the Tulip Dome, contains symmetrical screens of narrow high grade metasedimentary rock bands that define a ghost stratigraphy. Small scale domal and basinal structures within the north section ... Show Abstract

Godfrey, J.D.  Langenberg, C.W.  1986-01-01

ESR 1989-01

Coal Quality variation in the Cadomin-Luscar coalfield, Alberta

The economic Jewel Seam forms part of the Lower Cretaceous Gates Formation and has a stratigraphic thickness of 10 m. Its depositional setting was on a coastal plain, well removed from marine clastic influences. Shortening of the strata by folding ... Show Abstract

Langenberg, C.W.  MacDonald, D.E.  Kalkreuth, W.D.  Strobl, R.S.  1989-01-01

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