P number: | P528131 |
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Caption: | Muscovite mica split, trimmed and graded as 'No. 5.5', 'good stained' from the Little Scatwell mica prospect, eight miles from Strathpeffer, Ross and Cromarty. |
Description: | Several specimens of muscovite mica split, trimmed and graded as 'No. 5.5', 'good stained' from the Little Scatwell mica prospect, eight miles from Strathpeffer, Ross and Cromarty. British Geological Survey Petrology Collection sample number MC 7739. Grades between 4 and 6 were regarded as 'strategic mica' with 5 and 5.5 being the grades most heavily in demand. Mica was sold by the pound weight and usually in small consignments. Muscovite was mined at a number of locations in Scotland during the Second World War. The two most productive were the Knoydart mica prospect and the Little Scatwell prospect. Output from both went to the Pitlochry Sorting Factory for processing and grading into commodities such as these. |
Date taken: | 25/06/1905 |
Photographer: | Unknown |
Copyright statement: | Unknown |
Orientation: | Landscape |
Size: | 180.29 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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