Chemical Formula: Mg6Fe3+2(OH)16·4H2O
Locality: Langbanshyttan, Sweden.
Name Origin: From the Greek, pyro and the Latin aurium, "fire" and "golden" because of the gold-like submetallic scales present...
Chemical Formula: Cu5(PO4)2(OH)4
Locality: Virneberg Mine, Rheinbreitbach, Westerwald, Rhineland-Palatinate, Germany.
Name Origin: From the Greek, pseudo - "false" and malachite.
Pseudomalachite is a phosphate of copper with...
Environment: Magmatic, post-volcanic or young volcanic rocks.
Locality: Vesuvius and Etna, Italy.
Name Origin: From the Greek pseudo - "I mislead" and the mineral brookite.
Chemical Formula: Ag3AsS3
Locality: Himmelsfurst mine, Erbisdor, near Freiberg, Germany
Name Origin: After the French chemist, J. L. Proust (1755-1826).
Proustite is a sulfosalt mineral consisting of;...