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Miarolitic cavity

Miarolitic cavity

Photo Copyright © William C. van Laer, 2012  - This image is copyrighted. Unauthorized reproduction prohibited.

When I found this pocket in 2003, it was a tiny hole barely visible in the otherwise solid granite. The hole was easily enlarged, as the Crags granite is somewhat less resistant to weathering than the granite of the Sawtooth Batholith. I found exceptional smoky quartz crystals here, along with porcelain-like microcline and snow-white albite. The flat from this pocket is shown here: http://www.mindat.org/photo-485052.html

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Photo added: 1st Sep 2012

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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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