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Bertrandite from Mount Antero, Colorado
American Journal of Science
THIS rare mineral was first identified as a new species by M. E. Bertrand * from the study of a few small crystals collected from a pegmatite vein at Petit Port, near N antes, France. M. Des Oloizeauxt has also identified the mineral at the gneiss quarries at Barbin, near Nantes, while M. A. Damonr:j: has analyzed it and determined its composition to be H.Be.Si.O.; he also gave to it the name Bertrandite. The mineraI has since been identified by R. Scharizer § at a feldspar quarry near Pisek,doi:10.2475/ajs.s3-36.211.52 fatcat:cv2snra55nbrdlhqhgdniuamje