| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Germany-Czech Republic > Cassiterite var. Zinnwald Twin |
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| DESCRIPTION: | No. 33719 |
| Mineral: | Cassiterite var. Zinnwald Twin |
| Locality: | Zinnwald-Cínovec District, Erzgebirge, Saxony-Bohemia border region, Germany-Czech Republic |
| Description: | Large twinned crystals of black cassiterite 18 mm across on a matrix of bladed black ferberite crystals up to 12 mm with partial coating of 1 mm brown zinnwaldite mica (Mg-rich polylithionite or siderophyllite). The cassiterite is clean and undamaged. Ex. John A. Rorer, Jr. collection #120; Purchased by Dr. Rorer in Verdun, France 1951 |
| Overall Size: | 7x6x3 cm |
| Crystals: | 1-18 mm |
| Archived: | For reference only |
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