| P number: | P528124 |
|---|---|
| Caption: | Muscovite mica, a close-up of mica cut and trimmed at the mica processing Pitlochry Depot during World War Two. |
| Description: | A close-up photograph of some cut, trimmed and split mica sheets. The mica clearly shows bevelled edges caused by trimming with a knife. British Geological Survey Petrology Collection sample number MC 7732. The split mica sheets are trimmed of all flaws, structural imperfections or, less serious, inclusions. The cutting knife is held at a low angle to the cleavage so the edges are consequently bevelled. The mica was used for a wide range of radio, electrical and scientific purposes. Typical items include condenser plates, valve bridges, cathode ray plates and discs, commutator separators, wrappings and washers, heater plates and stove plates. In addition to the block mica the depot produced a large amount of scrap mica. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 220.99 KB; 1000 x 665 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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