Collections

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Unknown
ID: G196
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Unknown
ID: G197
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Unknown
ID: G198
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Unknown
ID: G199
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Unknown
ID: G200
ID: G201
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A fine grained lava of granite composition
ID: G202
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A glassy lava of granite composition.
ID: G203
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A course-grained rock of quartz, felspar and mica
ID: G204