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Ganophyllite - Miniera di Cassagna

Informations

Inserted from

 Diether G., Bodensee-Nord

Collectors Summary

Chemical Formula (K,Na)xMn2+6(Si,Al)10O24(OH)4·nH2O {x = 1-2}{n = 7-11}
Color goldbraun
Streak color hellbraun
Hardness (Mohs) 4.25
Solubility +++ HCl
Crystal System monoklin, I2/a