 | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | British Columbia NF Labrador (part of Newfoundland Province) MB Manitoba NB New Brunswick NF Newfoundland...Terrestrial kamacite is rare; most occurrences are in basalts in which the iron has been reduced by the assimilation... where masses of up to 20 tons are present in basalts that have broken through coal seams. Other significant...igneous and metamorphic rocks, and massive in metamorphosed coal beds. Major commercial deposits are mined...with graphite. Black. H = 1-2. Occurs in shock-metamorphosed graphite gneisses, and in ureilite meteorites |  | | Book | | grades of metamorphism in many metamorphosed shales, sandstones, and basalts; but the occurrence of K-feldspar...Crocidolite or blue asbestos comes principally from Cape Province, Transvall, South Africa, where it occurs usually...compositions. Crocidolite is found mainly in feebly metamorphosed ironstones, where the original sediments apparently... Sym- indicate that the nodular xenoliths in basalts crystallized at pressures of 2500-5000 barsequivalent...inclusions are o/j'vme-bearing in crystals basalts (Roedder, generally rounded to spherical, although |
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