Chemical Formula:	Zn2(AsO4)(OH)
Composition:	Molecular Weight = 286.71 g
	Zinc	45.61 %	Zn	56.78 %	ZnO	0.00 %
	Arsenic	26.13 %	As	40.08 %	As2O5	0.00 %
	Hydrogen	0.35 %	H	3.14 %	H2O	0.00 %
	Oxygen	27.90 %	O	0.00 %		0.00 %
		99.99 %		100.00 %
Empirical Formula:	Zn2(AsO4)(OH)
Environment:
Locality:	Chile, Atacama, Chañarcillo. Link to MinDat.org Location Data.
Name Origin:	Named after the French mineralogist Gilbert Joseph Adam (1795-1881)
Synonym: