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Uploaded on:
14/03/2009 08:59:34
Type:
Digital Asset
File Size:
303.63 KB
Dimensions:
1001 x 670 pixels
135 views 4 downloads
P number: P526432
Caption: Photomicrograph of sandstone from Plough Quarry, Matlock, Derbyshire, England
Description: The image is a photomicrograph of part of a thin section of sandstone from Stanton Moor viewed under a relatively low-power lens in order to show the grain structure of the rock. The specimen is of Carboniferous age. British Geological Survey Petrology Collection sample number ED 7364. The sample is a sandstone containing a number of different mineral components which can be differentiated in thin section. The most common minerals are grains of quartz and feldspar which appear as whitish or pale yellow-white in the image. These form the 'framework' grains of the rock. A number of opaque grains of iron oxide (black or very dark brown in the image) are present throughout the rock. To the naked eye (in a hand specimen or a masonry block of the stone) these iron oxide grains appear as orange or brown 'spots', giving a speckled appearance to the stone. Stanton Moor is currently a popular building stone both in England and Scotland. It has been much used in Edinburgh for repair work on the historic buildings of the New Town.
Date taken: 25/06/1905
Photographer: Unknown
Copyright statement: Unknown
Orientation: Landscape
Size: 303.63 KB; 1001 x 670 pixels; 85 x 57 mm (print at 300 DPI); 265 x 177 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Unsorted Images  

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