http://earthwise.bgs.ac.uk/index.php?action=history&feed=atom&title=File%3AP000156.jpg 2026-04-03T20:06:00Z Revision history for this page on the wiki MediaWiki 1.42.3 http://earthwise.bgs.ac.uk/index.php?title=File:P000156.jpg&diff=31939&oldid=prev 2017-08-02T17:59:57Z

<p>User created page with UploadWizard</p> <p><b>New page</b></p><div>=={{int:filedesc}}==<br /> {{Information<br /> |description={{|1=Sgurr Coire nan Gobhar, Loch Nevis, Knoydart. Inverness-shire. Opencast mica workings. No. 3 Working, Upper Bench. Showing highly inclined bands of mica-bearing pegmatite (white) and schist (grey). The deposit was the most extensive and valuable source of mica in the western Highlands. The quartz-rich pegmatite contained books of white mica (muscovite) up to 18 inches to two feet in diameter. Muscovite, the commonest variety of the mica group is a potassium aluminium silicate that at this location forms large crystals that split freely and yield extremely thin, uniform plates and films. P000156.}}<br /> |date=2017-08-02 18:58:54<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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