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Okayamalite
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| Mineral: | Okayamalite: Ca2B2SiO7 | ||||
| Comments: | Intergrowth between crystalline okayamalite (a) and amorphous silica (b). Okayamalite here forms regular lamellae elongated along [001], typically 400 Å thick. The grainy area (c) corresponds to the graphite film.. | ||||
| Location: | Skarn sample from the Arendal district, Sorlandet, Norway. (AmMin, v85:1508). | ||||
| Scale: | See Image. | ||||
| Copyright: | © American Mineralogist | ||||
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