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Quartz (Var: Chalcedony)

Quartz (Var: Chalcedony) : SiO2
minID: TX4-QAP

Photo Copyright © Rob Lavinsky & irocks.com  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 18.2 cm x 8.6 cm x 5.5 cm

18.2 x 8.6 x 5.5 cm (largest). A stunning large cabinet pair from a sliced and polished hollow, very elongate colony of coral - you can see the pattern on the outside - that has been replaced or filled inside with botryoidal and banded chalcedony. The lustrous botryoids have a gorgeous variety of color. They look like pearls. This is one of those unusual cases where biology meets mineralogy. This dramatic specimen is from the Hauck Collection.

This photo has been shown 319 times

Photo added: 6th Jan 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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