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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Löllingite from
Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA


Locality type:Mine
Classification
Species:Löllingite
Formula:FeAs2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Löllingite data
Locality Data:Click here to view Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:212372
Long-form Identifier:1:3:212372:1
GUID (UUID V4):0
Nearest other occurrences of Löllingite
1.2km (0.7 miles) ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
1.8km (1.1 miles) ⓘWhite Cap Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
2.2km (1.4 miles) ⓘPeerless Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
2.3km (1.4 miles) ⓘDike Lode, Keystone Mining District, Pennington County, South Dakota, USA
2.9km (1.8 miles) ⓘDan Patch Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
3.5km (2.2 miles) ⓘBig Chief Mine, Glendale, Keystone Mining District, Pennington County, South Dakota, USA
5.0km (3.1 miles) ⓘBob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
15.2km (9.4 miles) ⓘVictory Mine, Custer, Custer Mining District, Custer County, South Dakota, USA
15.5km (9.7 miles) ⓘEarl Lode, Custer Mining District, Custer County, South Dakota, USA
15.6km (9.7 miles) ⓘHot Shot mine, Custer, Custer Mining District, Custer County, South Dakota, USA
References
Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635
 
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