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dehrnite

A hydrous phosphate of calcium, sodium, and potassium; hexagonal; crystalline crusts and minute crystals; grayish- to greenish-white. The mineral from Dehrn, Nassau, Germany, is richer in sodium, conforming nearly to the formula 7CaO.Na2O.2P2O5.H2O , whereas the mineral found near Fairfield, UT is described as 14CaO.2(Na,K)2O.4P2O53(H2O,CO2) .

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  • ed.young
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