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Robertsite - Rubicon Mine (Rubikon Mine)

Informations

Inserted from

Diether G., Bodensee-Nord

Collectors Summary

Chemical Formula Ca2Mn3+3O2(PO4)3·3H2O
Color Blutrot, bräunlichschwarz, dunkelrot, rötlichbraun, schwarz
Streak color braun
Lustre Halbmetallglanz, Seidenglanz
Hardness (Mohs) 3.5
Cleavages gut {001}
Solubility +++ HCl
Crystal System monoklin, A2/a