Michigan Datolite Nodules-Gallery
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From lake bed off Keweenaw Point
7.8 cm x 4.2 cm
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Caledonia Mine
14 cm x 8.4 cm
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Delaware Mine
12.4 cm x 9.6 cm
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From Centennial #2 Mine
9.8 cm x 2.8 cm
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From lake bed off Keweenaw Point
3.2 cm x 1.9 cm
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Mandan Mine
9.2 cm x 4.8 cm
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Mesnard Mine
12.6 cm x 9.8 cm
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