Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Marcasite from
Mary Mine, Lawson Mining District, Clear Creek County, Colorado, USA


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Mary Mine, Lawson Mining District, Clear Creek County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:488705
Long-form Identifier:1:3:488705:8
GUID (UUID V4):0
Nearest other occurrences of Marcasite
3.1km (1.9 miles) ⓘMayflower, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
3.4km (2.1 miles) ⓘBeaver Incline, Lamartine Mining District, Clear Creek County, Colorado, USA
3.8km (2.4 miles) ⓘTwo Brothers Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
5.1km (3.2 miles) ⓘWest Calhoun Mine, Calhoun-Wood Mines (Jefferson), Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
5.2km (3.2 miles) ⓘDorit - King Solomon Tunnel (King Solomon), Lamartine Mining District, Clear Creek County, Colorado, USA
8.9km (5.5 miles) ⓘDixie Mine, Lamartine Mining District, Clear Creek County, Colorado, USA
9.3km (5.8 miles) ⓘHumboldt et al Claims, Cascade, Chicago Creek, Clear Creek County, Colorado, USA
9.4km (5.9 miles) ⓘCharter Oak Prospect (Tyone), Chicago Creek, Clear Creek County, Colorado, USA
9.8km (6.1 miles) ⓘHenry Wilson, Lamartine Mining District, Clear Creek County, Colorado, USA
10.0km (6.2 miles) ⓘMohawk, Chicago Creek, Clear Creek County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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