| P number: | P527918 |
|---|---|
| Caption: | Sparry calcite from the Leadhills - Wanlockhead mining district, Lanarkshire, Dumfriesshire. |
| Description: | Sparry calcite from the Leadhills - Wanlockhead mining district, Lanarkshire, Dumfriesshire. British Geological Survey Petrology Collection sample number MC 7694. Calcite is a very common 'gangue' mineral, a mineral of no economic value compared with the 'ore' mineral which is extracted for use. Calcite is the hexagonal form of calcium carbonate and occurs in a great many forms both crystalline as in this example and massive. The large cavities in the veins are often lined with dog-tooth spar, large scalenahedra. In other cases nail-head spar occurs that have flatter points. It had perfect rhombohedral cleavage, has a hardness of three on Moh's scale of hardness and effervesces with dilute hydrochloric acid. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 155.09 KB; 1000 x 775 pixels; 85 x 66 mm (print at 300 DPI); 265 x 205 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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