Lemanskiite Mineral Data

General Lemanskiite Information
Chemical Formula:	NaCaCu5(AsO4)4Cl•5H2O
Composition:	Molecular Weight = 1,060.88 gm
	Sodium 2.25 % Na 3.04 % Na₂O
	Calcium 3.78 % Ca 5.29 % CaO
	Copper 30.01 % Cu 37.57 % CuO
	Arsenic 28.25 % As 43.33 % As₂O₅
	Hydrogen 0.94 % H 8.37 % H₂O
	Chlorine 3.21 % Cl 3.21 % Cl
	- % Cl -0.72 % -O=Cl₂
	Oxygen 31.57 % O
	______ ______
	100.00 % 100.08 % = TOTAL OXIDE
Empirical Formula:	Na_1.04CaCu_5.01(AsO₄)₄Cl_0.96•4.93(H₂O)
Environment:	Found in mine dump material from the abandoned Abundancia gold mine, Ca-analog of zdenekite, dimorphous with lavendulan.
IMA Status:	Approved IMA 2001 (Dana # Added)
Locality:	El Guanaco mining district, south of Cerro La Estrella, about 95 km east of Taltal, in Region II, Antofagasta Province, Chile. Link to MinDat.org Location Data.
Name Origin:	Named for Chester (Chet) S. Lemanski, Jr (b. 1947),.
Synonym:	IMA1999-037