| P number: | P553066 |
|---|---|
| Caption: | Dolomite with some chert. Amhainn a'Chnocain. Sutherland. |
| Description: | A bluish-white compact marble, traversed by thin fracture veins without definite direction. The thin section is composed of equi-dimensional grains of dolomite, 0.05 - 0.1 mm across, but is coarser (0.1 - 0.2 mm size) in patches. Narrow lines of trituration and iron staining traverse the rock and appear to be followed by nodular segregations of cherty silica. Chert also forms irregular masses with which the coarser dolomite is sometimes associated, and the coarser crystallization of the dolomite and the aggregation of this chert both appear to be earlier than the fracturing of the rock. Dolomite with chert, fine-grained, granular. SL0272. Britrocks S35797. 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: | 391.35 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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