pegmatite containing black mineral

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Locality: Autoroute 155 roadcut, Mékinac RCM, Mauricie, Québec, Canada

This is a specimen of a pegmatite chunck collected in the same rock pile coming from the large road cut on route 155. Piece is about 4"x3". The feldspar is a brownish color. The black mineral in prismatic crystals is probably an orthopyroxene altering to a green mineral.

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Photo added: 11th Dec 2008

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 16th Feb 2012 01:15:27