Specimen Details
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Number Of Specimens
1
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Specimen Nature
Form: Hand Specimen(s)
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Rock Name
Rhyolite
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Rock Class
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Rock Group
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Rock Description
Previously classified as Felsite Porphyry. This rhyolite is composed of small spherulites (2mm) of white feldspar and some black biotite crystals in a very fine grained pink matrix.
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Collecting Areas
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Type of Item
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