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

Plutonic igneous environments

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