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Economic Geology; July 1966; v. 61; no. 4; p. 768-776
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Decomposition of siderite to magnetite at lower oxygen fugacities; a thermochemical interpretation and geological implications

Shunzo Yui

A thermodynamic argument is developed to show that the development of magnetite from siderite, as observed in Precambrian iron formations, may occur without addition of oxygen either as a consequence of increase in temperature or decrease in the fugacity of carbon dioxide. Degree of escape of carbon dioxide may be a controlling factor at lower temperatures.

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 American MineralogistHome page
A. M. Koziol and A. M. Koziol
Experimental determination of siderite stability and application to Martian Meteorite ALH84001
American Mineralogist, February 1, 2004; 89(2-3): 294 - 300.
[Abstract] [Full Text] [PDF]


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