http://earthwise.bgs.ac.uk/index.php?action=history&feed=atom&title=File%3AP527593.jpg 2026-04-03T21:47:49Z Revision history for this page on the wiki MediaWiki 1.42.3 http://earthwise.bgs.ac.uk/index.php?title=File:P527593.jpg&diff=31953&oldid=prev 2017-08-02T18:04:19Z

<p>User created page with UploadWizard</p> <p><b>New page</b></p><div>=={{int:filedesc}}==<br /> {{Information<br /> |description={{|1=A very large specimen of muscovite mica from the Sgurr Coire nan Gobhar mica workings in Knoydart. The workings, active during 1943-1944, supplied the processing depot at Pitlochry with the raw mica. British Geological Survey Petrology Collection sample number MC 7373. The workings consisted of five quarries of which one (the first to be opened up) was much more important than the others. Seventy per cent of the production came from this first quarry. The mica was of high quality, it was brownish-ruby in colour, hard, substantially flat and glossy. A small proportion contained light vegetable stains or mineral dots but the entire output proved to be of strategic quality. P527593.}}<br /> |date=2017-08-02 19:01:00<br /> |source=British Geological Survey<br /> |author=British Geological Survey<br /> |permission=<br /> |other versions=<br /> }}<br /> <br /> =={{int:license-header}}==<br /> {{subst:Custom license marker added by UW}}<br /> {{BGS}}<br /> <br /> [[Category:Uploaded with UploadWizard]]</div>

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