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Protoanthophyllite
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| Mineral: | Protoanthophyllite: (Mg,Fe)7Si8O22(OH)2 | ||||
| Comments: | Drill core showing white acicular crystalline aggregates of protoanthophyllite in matrix with a close up image on the right.. | ||||
| Location: | Drill-core sample from the waste dump of the abandoned Takase chromite mine, Okayama Prefecture, Japan. | ||||
| Scale: | Core size 3 cm. | ||||
| Copyright: | © American Mineralogist | ||||
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