| P number: | P000157 |
|---|---|
| Old photograph number: | C03803 |
| Caption: | Sgurr Coire nan Gobhar, Loch Nevis, Knoydart. Inverness-shire. Opencast mica workings. Samples of mica books after rough dressing (rough cobbed) as sent for processing at the Pitlochry Depot. (Note 0.15 m. scale at base.) |
| Description: | Sgurr Coire nan Gobhar, Loch Nevis, Knoydart. Inverness-shire. Opencast mica workings. Samples of mica books after rough dressing (rough cobbed) as sent for processing at the Pitlochry Depot. (Note 0.15 m. scale at base.) A photograph clearly illustrating the nature of the muscovite mica. Mica was used in industry in two forms; in a finely divided or pulverized form called 'ground mica' produced from mine waste or shop scrap, or sheet mica as in the photograph. The proportion of usable mica extracted is small, up to two per cent of the total rock excavated. A further 65-90 per cent is lost due to natural imperfections and damage to the 'books' during extraction. |
| Date taken: | Mon Jan 01 00:00:00 BST 1945 |
| Photographer: | Fisher, W.D. |
| Copyright statement: | Crown |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| X longitude/easting: | 179500 |
| Y latitude/northing: | 796500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 285.21 KB; 1000 x 723 pixels; 85 x 61 mm (print at 300 DPI); 265 x 191 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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