Agardite-(Nd)

General Information: Chemical Formula:(Nd,La,Ce,Ca)Cu6(AsO4)3(OH)6·3(H2O) Composition:(Molecular Weight = 1,085.93 gm)Calcium 0.37 % CaLanthanum 3.84 % LaCerium 1.29 % CeCopper 35.11 % CuArsenic 20.70 % AsHydrogen 1.11 % H Neodymium 6.64 % NdOxygen 30.94 % O  Empirical Formula: Nd0.5La0.3Ce0.1Ca0.1Cu6(AsO4)3(OH)6·3(H2O) IMA Status:Not IMA Approved (Dana # Added) Name Origin:Named for the composition and for Jules Agard, Geologist, Bureau de Recherches Geologiques et Minieres, Orleans, France.Physical Properties: Color:grass green. Density:3.72 Diaphaniety:Transparent Hardness:3-4 - Calcite-Fluorite Luster:Vitreous (Glassy) Streak:greenish whiteMore details...