| P number: | P527957 |
|---|---|
| Caption: | Photomicrograph of Tayvallich Limestone. Light: XPL. Magnification: x2.5. Fincharn Quarry at south end of Loch Awe, Argyllshire, Scotland. |
| Description: | Dark grey sparkling limestone, of medium grain size, containing small aggregates of white calcite. This specimen is Dalradian Supergroup (Precambrian) in age. BGS sample number SL126. British Geological Survey Petrology Collection sample number S 34574. Photomicrograph details: Light: XPL, Magnification: x2.5. The rock contains granular dusty calcite, 0.4 mm grain size, partially recrystallized to clear calcite, forming lenticular aggregates in a finer-grained rock, of mixed dusty and clear calcite grains, 0.1 mm, showing foliation which curves round the lenticles. The foliation is shown by elongation of grains and by alternation of coarser and finer laminae with streaks of carbonaceous matter. Quartz occurs as an essential but subordinate constituent, as large grains partly recrystallized along with calcite, sometimes showing regrowth rims, partly as lenticular aggregates of smaller grains, and to a subordinate extent interstitial in the coarser dusty limestone. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 398.21 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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