Mine Lac d'Amiante (Lake Asbestos Mine; "LAB Mine"; "Black Lake Mine"), Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada
|Latitude & Longitude (WGS84):||46° 1' 54'' North , 71° 21' 43'' West|
|Latitude & Longitude (decimal):||46.0316666667, -71.3619444444|
Formerly: Mine Lac d'Amiante (Lake Asbestos mine; LAB mine; Black Lake mine), Black Lake, Mégantic Co., Québec, Canada
Technically both with the limits of Thetford Mines and Saint-Joseph-de-Coleraine the mine falls mostly within Saint-Joseph-de-Coleraine.
An asbestos mine in serpentinized peridotite, Thetford mines ophiolite complex. Operated by LAB Chrysotile (LAB = Lake Asbestos Bell), this is a huge, inactive open pit mine (closed in 2011). In recent years many labels show "LAB mine" as the locality which reflects the preference of many local collectors.
Also erroneously known as "Black Lake Mine".
|Ordovician - Cambrian443.8 - 541 Ma||Cambrian-Ordovician plutonic: ultramafic rocks|
Plutonic: ultramafic rocks
|Cambrian-Ordovician443.8 - 541 Ma||Cambrian-Ordovician mixed volcanic, volcaniclastic and sedimentary rocks|
Mixed volcanic, volcaniclastic and sedimentary rocks
This designation includes Precambrian iron-formation-bearing sedimentary and volcanic sequences, as well as mixed sedimentary and volcanic or volcaniclastic sequences.
References for regional geology:
Data provided by Macrostrat.org
Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .
Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.
46 valid minerals. 1 erroneous literature entry.
COOKE, H.C. (1936) Asbestos deposits of Thetford District, Quebec. Economic Geology and the
COOKE, H.C. (1937) Thetford, Disraeli, and eastern half of Warwick map areas, Quebec; with chapters on the Beauceville, Saint Francis, and Lake Aylmer series by T.H. Clark. Memoir Geological Survey of Canada. 160 p.
THOMPSON, W. (1971) Rodingite near Thetford mines, Quebec. Mineralogical Record. 2, 45-46.
RIORDON, P.H. & LALIBERTÉ, R. (1972): Asbestos deposits of southern Quebec. Guide book Excursion B-08, Int. Geological Congress, 22 p.
LAMARCHE, R.Y. & RIORDON, P.H. (1981) Geology and genesis of the chrysotile asbestos deposits of northern Appalachia. In: Geology of asbestos deposits. Riordon, P.H. (editor), 11-23. Am. Inst. Min. and Metall. Eng., Soc. Min. Eng. New York, NY,
LAURENT, R., TANER, M.F. & BERTRAND, J. (1984) Mise en place et petrologie du granite associe au complexe ophiolitique de Thetford Mines, Quebec. [Emplacement and petrology of the granite associated with the Thetford Mines ophiolite complex, Quebec.], Canadian Journal of Earth Sciences 21, 1114 1125.
TANER, M.F. & LAURENT, R. (1984) Iron rich amesite from the Lake Asbestos Mine, Black Lake, Quebec. Canadian Mineralogist 22, 437 442.
HARNOIS, L., TROTTIER, J. & MORENCY, M. (1990) Rare earth element geochemistry of Thetford Mines ophiolite complex, Northern Appalachians, Canada. Contributions to Mineralogy and Petrology 105, 433 445.
TSHERNICH, R. (1992): Zeolites of the World, p.440
GAUDARD, S. (1993) Voyage au coeur des Appalaches (Guide to the Thetford Mines - Black Lake area in French) publ. Musée minéralogique et minier de la région de l'Amiante, 178 p.
Bulletin of the Society of Economic Geologists 31, 4, 355 376.