Calkinsite-(Ce) Mineral Data

General Calkinsite-(Ce) Information
Chemical Formula:	(Ce,La)2(CO3)3•4(H2O)
Composition:	Molecular Weight = 531.71 gm
	Lanthanum 13.06 % La 15.32 % La₂O₃
	Cerium 39.53 % Ce 46.30 % Ce₂O₃
	Hydrogen 1.52 % H 13.55 % H₂O
	Carbon 6.78 % C 24.83 % CO₂
	Oxygen 39.12 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	Ce_1.5La_0.5(CO₃)₃•4(H₂O)
Environment:	Weathering product closely associated with burbankite.
IMA Status:	Valid Species (Pre-IMA) 1953
Locality:	Vermiculite prospects at the head of Big Sandy Creek, Rocky Boy�s Indian Reservation, about 40 km east of Box Elder, Hill Co., Montana, USA. Link to MinDat.org Location Data.
Name Origin:	Named for Frank Cathcart Calkins (1878-1974), geologist with the U.S. Geological Survey.