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
Milldam Mine, Great Hucklow, Derbyshire Dales District, Derbyshire, England, UK


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Milldam Mine, Great Hucklow, Derbyshire Dales District, Derbyshire, England, UK
Data Identifiers
Mindat Occurrence Record ID:776199
Long-form Identifier:1:3:776199:7
GUID (UUID V4):0
Nearest other occurrences of Marcasite
2.7km (1.7 miles) ⓘLambpart Lane Openpit, Bradwell, Derbyshire Dales District, Derbyshire, England, UK
4.3km (2.7 miles) ⓘLadywash Mine, Eyam, Derbyshire Dales District, Derbyshire, England, UK
4.6km (2.9 miles) ⓘLaporte Minerals openpit, Dirtlow Rake, Castleton, High Peak, Derbyshire, England, UK
5.4km (3.4 miles) ⓘWall Shaft Mine, Castleton, High Peak, Derbyshire, England, UK
6.9km (4.3 miles) ⓘOdin Mine, Castleton, High Peak, Derbyshire, England, UK
7.0km (4.4 miles) ⓘWindy Knoll Quarry, Castleton, High Peak, Derbyshire, England, UK
8.7km (5.4 miles) ⓘMoor Jarnett Lane, Taddington, Derbyshire Dales District, Derbyshire, England, UK
9.4km (5.8 miles) ⓘHubberdale mines, Flagg, Derbyshire Dales District, Derbyshire, England, UK
15.1km (9.4 miles) ⓘMawstone mine, Youlgreave, Derbyshire Dales District, Derbyshire, England, UK
17.8km (11.1 miles) ⓘMillclose Mine, South Darley, Derbyshire Dales District, Derbyshire, England, UK
References
Steve Rust collection
 
and/or  
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