Rankachite, Ca0.5(V4+,V5+)(W6+,Fe3+)2O8(OH) · 2H2O, Grube Clara, Wolfach, Schwarzwald, Deutschland Copyright Stefan
Stilbite - Partridge Island, Nova Scotia, Canada - e-Rocks. Beautiful stilbite crystals with minor white calcite
Mimetite, whose name derives from the Greek Μιμητής mimetes, meaning "imitator", is a lead arsenate chloride mineral (Pb5(AsO4)3Cl) which forms as a secondary mineral in lead deposits, usually by the oxidation of galena and arsenopyrite. The name is a reference to mimetite's resemblance to the mineral pyromorphite.