Definitions for eosphorite
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An orthorhombic-dipyramidal mineral containing aluminum, hydrogen, manganese, oxygen, and phosphorus.
a hydrous phosphate of alumina and manganese. It is generally of a rose-pink color, -- whence the name
Origin: [From Gr. Bringer of morn.]
Eosphorite is a pink manganese phosphate mineral with chemical formula: MnAl(OH)2·H2O. Eosphorite crystallizes in the monoclinic crystal system. It forms prismatic crystals which often form radiating or spherical clusters. The crystals often show pseudo–orthorhombic forms due to twinning. It was first described in 1878 for an occurrence in the Branchville Mica Mine in Branchville, Fairfield County, Connecticut, USA. Its name is derived from the Greek έωσφορος for "dawn-bearing," because of its pink color. It occurs worldwide typically as a secondary mineral in pegmatites in association with rhodochrosite, lithiophilite, triploidite, dickinsonite, albite, cookeite, apatite, beryllonite, hydroxyl-herderite and tourmaline.
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