Cordierite : (Mg,Fe)2Al3(AlSi5O18)

Copyright © Rob Lavinsky & irocks.com

Cordierite : (Mg,Fe)2Al3(AlSi5O18)

Copyright © Rob Lavinsky & irocks.com  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 22 cm x 18 cm x 9 cm

22 x 18 x 9 cm. Cordierite from this locality sets the standard for the species. Unlike the ugly material from most places, it is actually pretty here - sometimes. It has a waxy brown shoe-polish look to the surface on the best specimens, such as this one. This was collected by Bob Whitmore in the 1970s and is a very aesthetic cluster with a bit of attached matrix. Pen shown for scale. Ex. Robert Whitmore Collection.

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Photo added: 14th Sep 2009