| P number: | P553106 |
|---|---|
| Caption: | Limestone. Quarry, 1450 yards south by west of Achvarasdal, Reay. Caithness. |
| Description: | A pale buff compact limestone, composed essentially of rather turbid calcite in grains 0.01 - 0.15mm across, with scattered larger grains. Angular quartz, up to 0.15mm grain-size, white mica, in flakes generally 0.1mm long, and potash-feldspar are abundantly distributed in the rock and are concentrated along thin laminae coloured dark by bituminous matter. In a concentration of minerals insoluble in cold dilute HCl, chlorite, hornblende and clay are found as accessory constituents, and it is seen that potash-feldspar has developed crystal faces during regrowth. Limestone, luteous, fine-grained, with sapropelitic laminae. SL0282. Britrocks S35911. Magnification x40. Light PPL. |
| Date taken: | Wed Jan 21 00:00:00 GMT 2004 |
| Photographer: | Sutherland, A. |
| Copyright statement: | NERC |
| Additional information: | Description from: Limestones of Scotland: chemical analyses and petrography. Edinburgh : HMSO, 1956. |
| Orientation: | Landscape |
| Size: | 383.10 KB; 1000 x 750 pixels; 85 x 64 mm (print at 300 DPI); 265 x 198 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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