MINERALS OF THE PEAK DISTRICT OF DERBYSHIRE
Trevor D. Ford
William A. S. Sarjeant
Michael E. Smith
A comprehensive review of the minerals known or claimed for the Peak
District area of Derbyshire.
Phosgenite. "Wallclose mine", Cromford, 4
cm across, Charles Greville (1749 - 1809) Collection, Natural History
Museum, London.

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