Jensenite

General Information: Chemical Formula:Cu++3Te++++++O6·2(H2O) Composition:(Molecular Weight = 450.26 gm)Copper 42.34 % CuTellurium 28.34 % TeHydrogen 0.90 % H Oxygen 28.43 % O  Empirical Formula: Cu3(TeO6)·2(H2O) Environment:Secondary alteration of Cu and Te ore minerals. IMA Status:Approved IMA Locality:The dumps of the Centennial Eureka mine, Tintic district, Juab County, Utah, USA. Name Origin:For Mr. Matin C. Jensen (1959-), who first collected and recognized this mineral as a potentially new species.Physical Properties: Cleavage:[101] Fair Color:emerald green. Density:4.76 Diaphaniety:Transparent Habits:Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape., Pseudo Rhombohedral - Crystals show a rhombohedral outline., Cryptocrystalline - Occurs as crystals too small to distinguish with Hardness:3-4 - Calcite-Fluorite Luminescence:Non-fluorescent. Luster:Adamantine Streak:emerald greenMore details...