A pyrite mine.
References:
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 490, 502, 504, 626.
Mineral List:12 entries listed. 12 valid minerals. 1 type locality (valid mineral).
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