Galena
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Chesterman, pp. 361-362
| Galena | |
|---|---|
| Chemical name | Lead sulfide |
| Chemical formula | PbS |
| Identification | |
| Cleavage | Perfect in three directions at 90º |
| Hardness | 2 1/2 |
| Specific gravity | 7.4 to 7.6 |
Sources
- Chesterman, Charles W. The Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf: New York (1987)