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Image: Brecciated magnetite-quartz-jasper meta-BIF, Atlantic City Iron Mine WY

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Description: Brecciated magnetite-quartz-jasper meta-BIF (banded iron formation) (7.3 cm across at its widest) from the Precambrian of Wyoming, USA. Stratigraphy: Goldman Meadows Formation, upper Mesoarchean, 2.87 Ga; metamorphism at 1.4 Ga, during the early Mesoproterozoic. Locality: Atlantic City Iron Mine, northwestern side of Rt. 28, southwestern side of South Pass, Wind River Range, west-central Wyoming, USA.
Title: Brecciated magnetite-quartz-jasper meta-BIF, Atlantic City Iron Mine WY
Credit: Brecciated magnetite-quartz-jasper meta-BIF (Goldman Meadows Formation, Mesoarchean, 2.87 Ga; Atlantic City Iron Mine, southwestern side of South Pass, Wind River Range, west-central Wyoming, USA)
Author: James St. John
Usage Terms: Creative Commons Attribution 2.0
License: CC BY 2.0
License Link: http://creativecommons.org/licenses/by/2.0
Attribution Required?: Yes

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