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
Phonolite Porphyry
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Rock Class
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Rock Group
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Rock Description
Numerous phenocrysts of white feldspar and occasional small, black phenocrysts, possibly of amphibole, are contained in a fine grained greenish grey matrix.
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Category
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Scientific Group
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Discipline
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Collecting Areas
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Type of Item
Geospatial Information
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Country
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State