Macquartite Mineral Data

General Macquartite Information
Chemical Formula:	Pb3Cu(CrO4)(SiO3)(OH)4•2(H2O)
Composition:	Molecular Weight = 981.28 gm
	Chromium 5.30 % Cr 10.19 % CrO₃
	Copper 6.48 % Cu 8.11 % CuO
	Silicon 2.86 % Si 6.12 % SiO₂
	Hydrogen 0.82 % H 7.34 % H₂O
	Lead 63.35 % Pb 68.24 % PbO
	Oxygen 21.20 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	Pb₃Cu(CrO₄)(SiO₃)(OH)₄•2(H₂O)
Environment:	Encrusting dioptase.
IMA Status:	Approved IMA 1980
Locality:	Mammoth mine, Tiger, Pinal County, Arizona, USA. Link to MinDat.org Location Data.
Name Origin:	Named for Louis Charles Henri Macquart (1745-1803), French chemist who brought to France from Russia the samples of crocoite in which the element chromium was discovered.
Name Pronunciation:	Macquartite + Pronunciation