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Economic Geology; April 1966; v. 61; no. 2; p. 243-250
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Chemical composition of the Biwabik Iron Formation, Minnesota

Henry Lepp

Mean composition of Biwabik, weighted for area and thickness of individual units, shows more Fe and CaO, less SiO 2 , than older estimates. Uniformity in composition of composite samples used for calculation is considered to indicate uniformity of chemical and physical environment in source and depositional areas.

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Home page
 Geological Society, London, Special PublicationsHome page
B. Buhn and I. G. Stanistreet
Insight into the enigma of Neoproterozoic manganese and iron formations from the perspective of supercontinental break-up and glaciation
Geological Society, London, Special Publications, January 1, 1997; 119(1): 81 - 90.
[Abstract] [PDF]


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