| P number: | P528133 |
|---|---|
| Caption: | Muscovite mica split, trimmed and graded as 'No. 2', 'good stained' from the Loch Nevis Mica Prospect, Knoydart, Invernessshire. |
| Description: | Two specimens of muscovite mica graded as 'No 2' and 'good stained'. The mica is from Sgurr Coire nan Gobhar in Knoydart situated about 1.5 miles north-north-west of Kylesknoydart and 300 yards south-east from Loch Coir an Lochan and was processed at the Pitlochry Sorting Factory c. 1944. British Geological Survey Petrology Collection sample number MC 7741. The value of sheet mica depends on the grade or quality and the size of the sheet that can be obtained. The larger sizes such as this specimen are used for special purposes and the so called 'strategic' mica in most demand during the Second World War was the No. 4 to No. 6, particularly No. 5 and No. 5 and a half. Mica was sold by the pound and usually in comparatively small consignments. In December 1942 the value of this grade mica was c. 15s. 0d. per pound. This compares with the price of 'super clear ruby' at the same size 38s. 0d. per pound. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 166.19 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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