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Calcite, Goethite

Calcite : CaCO3, Goethite : α-Fe3+O(OH)
minID: W2U-FM0

This image has been released to the public domain and may be used freely.

A couple of twinned rhombehedral groups of calcite with oxidized goethite in the highly altered orange andesite. The area's also good for siderite roses/stacks with frosty calcite rhombs. The one in front is 3 in. between points. Taken quickly as a mineral rescue operation was underway with the excavator coming 'tomorrow'. end of 2003

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Photo added: 13th Nov 2009

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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