On a Group of Minerals Formed by the Combustion of Pyritous Shales in Midlothian

S. J. Shard

The Royal Scottish Museum

Mineralogical Magazine; September 1910 v. 15; no. 72; p. 403-406; DOI: 10.1180/minmag.1910.015.72.09
© 1910, The Mineralogical Society
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