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Thomsonite Nodule on Matrix
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Collection |
John Betts - Fine Minerals |
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Description |
Polished 30 mm nodule of Thomsonite in gray basalt matrix. The Thomsonite has circular, bulls-eye patterns.
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Locality |
Grand Marais, north shore of Lake Superior, Minnesota |
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Dimensions |
6.0 x 5.0 x 2.5 cm. |
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Specimen Grade |
B |
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Photograph |
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