| P number: | P528139 |
|---|---|
| Caption: | Muscovite mica split and trimmed from the Little Scatwell mica prospect, eight miles from Strathpeffer, Ross and Cromarty. |
| Description: | The specimens are typical of the split and trimmed muscovite from the Little Scatwell mica prospect, processed at the Pitlochry Sorting Factory. British Geological Survey Petrology Collection sample number MC 7747. After the mica `books? were extracted from the quarry the first process they underwent was rough dressing or rough cobbing. It consisted of splitting the books into sheets and the removal by cutting of the flaws, incrustations and striations. The mica would then be passed to the cutters who, using skill and great care would remove the remaining flaws and trim the edges leaving block mica of irregular shape with a curved and indented outline. Further fine splitting to remove stains and spots required great judgement to balance loss in weight with the possibility of improving the quality of the block. The final process was the grading for size and quality. |
| Date taken: | 25/06/1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 266.49 KB; 1000 x 642 pixels; 85 x 54 mm (print at 300 DPI); 265 x 170 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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