| P number: | P531440 |
|---|---|
| Caption: | Photomicrograph of Charlestown Main Limestone. Light: XPL. Magnification: x2.5. Chapel Limestone Quarry, about 2 miles north-west of Kirkcaldy, Fifeshire, Scotland. |
| Description: | Coarse-grained, bluish dolomite mottled with duller, cream-coloured dolomite. This specimen is Carboniferous Limestone Series in age. BGS sample number SL 210. British Geological Survey Petrology Collection sample number S 35900. Photomicrograph details: Light: XPL, Magnification: x2.5. The thin section shows dolomite in crystals up to 1.0 mm in size, mostly of irregular shape, but often showing rhomboidal angles. Interstitial between the grains is a patchy cement of clay aggregate, faintly yellowish-green in places and possessing a moderate birefringence. A little secondary quartz is present and pyrite occurs in small scattered grains. The dolomite usually shows undulose extinction. In summary, the rock is a dolomite with a clay aggregate. It is medium-grained, with an uneven mosaic texture, and shows some evidence for strain in the dolomite crystals. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 307.82 KB; 1000 x 663 pixels; 85 x 56 mm (print at 300 DPI); 265 x 175 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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