Parakhinite

General Information: Chemical Formula:Cu++3PbTe++++++O4(OH)6 Composition:(Molecular Weight = 691.48 gm)Copper 27.57 % CuTellurium 18.45 % TeHydrogen 0.87 % H Lead 29.96 % PbOxygen 23.14 % O  Empirical Formula: Cu3PbTeO4(OH)6 IMA Status:Approved IMA 1978 Locality:Emerald mine, Tombstone, Arizona, USA. Name Origin:Named in allusion to its dimorphous relationship to khinite.Physical Properties: Color:dark green. Density:6.5 - 6.7, Average = 6.6 Habits:Tabular - Form dimensions are thin in one direction., Hexagonal - Six-sided crystal shape in cross-section or habit., Euhedral Crystals - Occurs as well-formed crystals showing good e xternal form. Hardness:3.5 - Copper Penny Streak:greenMore details...