Mineral Specimen and Product Inventory Search

Availability

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Featured

Featured in Special Editions

Locality

W. Fork Mine, Reynolds Co., Missouri, United States

Formula

ZnS

Size

8.5 x 5 x 6 cm - Sm Cabinet

Tagged

Ore Minerals

Dark lustrous brown Sphalerite crystals to 3mm totally covering lumpy colloform growths of brassy Pyrite. Neat specimen!
The W. Fork Mine is located in the SE lead-district in Missouri and is also a Mississippi Valley Type deposit in the Viburnum Trend. According to a paper on the W. Fork Mine the presence of rapidly deposited, collorform ZnS and FeS is an indicator that the ore fluids which deposited the sulfides in the central zone were more saturated with respect to metal sulfides (email us for link to abstract if interested).