Roscherite

manganese

beryllonite

Formula:Ca2Mn2+5Be4(PO4)6(OH)4.6H2O
Hydrated phosphate containing hydroxyl; It also contains manganese and beryllium
Specific gravity: 2.90 to 2.97
Hardness: 4½
Streak: White
Colour: Brown, red, orange, greenish gray; yellowish green to brown in transmitted light; May exhibit abnormal interference colours (Mindat).
Solubility: Soluble in acids
Environments

Plutonic igneous environments
Pegmatites

Roscherite occurs in cavities in granite or in granitic pegmatites (Mindat, HOM), associated with albite, beryl, beryllonite, fluorapatite, hydroxylherderite, moraesite, muscovite and quartz (Mindat).

At the Sapucaia pegmatite mine, Brazil, roscherite occurs in vugs in muscovite, associated with faheyite, variscite, frondelite, beryl, muscovite and quartz (AM 43.824-838, HOM).

At the type locality, the Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirgskreis, Saxony, Germany, roscherite occurs in drusy cavities in granite associated with ježekite, lacroixite, childrenite, apatite, morinite, eosphorite, apatite and tourmaline (Dana, Mindat, HOM).

Back to Minerals