| P number: | P527944 |
|---|---|
| Caption: | Photomicrograph of Bilston Burn (No. 3) Limestone. Light: XPL. Magnification: x2.5. Esperston Limeworks, 600 yards north-east of Esperton, Midlothian, Scotland. |
| Description: | Pale buff, very fine-grained limestone with brown bituminous films. This specimen is Carboniferous Limestone Series in age. BGS sample number SL 45. British Geological Survey Petrology Collection sample number S 34534. Photomicrograph details: Light: XPL, Magnification: x2.5. The sample consists of finely granular calcite (0.01 mm grain) enclosing numerous shell fragments which are often flat or flattened along the bedding. Clay is sometimes recognizable in small aggregates as kaolin. Quartz is rarely distinguishable as small grains, 0.01 mm, but many feebly birefringent aggregates may be more finely divided quartz. Shreds of bituminous and limonitic matter are common and limonite replaces scattered rhombs of siderite. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 422.75 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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