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Published online by Cambridge University Press: 14 March 2018
In a paper read before this Society on June 16th, 1885, Mr. Wallace drew attention to this mineral as being found at Loch Bhruithaich, and stated that it was obtained incrusting Barytes.
The mineral is clear, beautifully crystalline, with a tendency to a bluish tinge of colour, and very friable.
page 42 note * The Mineralogical Magazine and Journal of the Mineralogical Society, Vol. VI. page 169.