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Plane polarized light and backscattered electron image (BEI) of tourmalines that fill veins from the carapace of the Geyser felsite. The tourmalines display oscillatory zoning that reflects chemical changes from schorl (dark gray in BSI) to foitite (light). Image: B. Dutrow and D. Henry

Image 22283 is a 450 by 1275 pixel GIF
Uploaded: Apr2 10


Last Modified: 2010-04-02 15:47:05
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B. Dutrow and D. Henry
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