| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from California > Gypsum |
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| DESCRIPTION: | No. 34520 |
| Mineral: | Gypsum |
| Locality: | Seal Rock, San Francisco, California |
| Description: | Flattened disc-shaped crystal aggregate of gypsum crystals. The gypsum has sand inclusions except at the terminations where there is a small translucent zone. This is from an old location near San Francisco. Ex. John A. Manley (1861-1936) ca. 1890s |
| Overall Size: | 5.5x5x1 cm |
| Crystals: | 4-5 mm |
| Archived: | For reference only |
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