File:P521389.jpg: Revision history

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30 March 2015

  • curprev 20:5320:53, 30 March 2015‎ Scotfot talk contribs‎ 4,329 bytes +4,329‎ Rock specimen of greywacke. Woodhead Mines, Carsphairn, Kirkcudbrightshire, Scotland. The rock is a fine to medium-grained muddy sandstone, with a grey colour. British Geological Survey Petrology Collection sample number EMC3644. Greywacke is a widely-...
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