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Calcite, Copper


Calcite : CaCO3, Copper : Cu
minID: 41G-J16

Photo Copyright © Thames Valley Minerals  - This image is copyrighted. Unauthorized reproduction prohibited.

Size: H:6cm x W:8.6cm x D:3cm


Description

A complex twinned growth of calcite crystals with stacked parallel scalenohedral terminations with dense bright inclusions of copper within.

Through the base you can see the copper layer comprises tiny particles covering an earlier phase of white calcite.

To the flanks and back there is further copper with tiny calcite crystals - a few isolated copper crystals are also attached to the main display.

The upper edge of the specimen is terminated, but has been interrupted by a deposition of sugary calcite and copper, or rather the last phase of crystallisation has not fully covered this.

There are a few points of wear or marks, but really the piece is very good.

Locality is pasted to the base, by comparison it looks very similar to some specimens from Quincy mine.



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Photo added: 26th May 2010

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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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