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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Beryl from
Nickel Plate Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA


Locality type:Mine
Classification
Species:Beryl
Formula:Be3Al2(Si6O18)
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Arrojadite-(KFe)
Data
Mineral Data:Click here to view Beryl data
Locality Data:Click here to view Nickel Plate Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:101269
Long-form Identifier:1:3:101269:9
GUID (UUID V4):0
Nearest other occurrences of Beryl
0.6km (0.4 miles) ⓘEdison Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
0.6km (0.4 miles) ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
0.7km (0.5 miles) ⓘWhite Cap Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
0.9km (0.6 miles) ⓘPeerless Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
1.0km (0.6 miles) ⓘMonte Carlo Prospect, Keystone Mining District, Pennington County, South Dakota, USA
1.5km (0.9 miles) ⓘHenry Tin Occurrence, Keystone Mining District, Pennington County, South Dakota, USA
1.7km (1.0 miles) ⓘDan Patch West Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
1.7km (1.1 miles) ⓘHugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
2.1km (1.3 miles) ⓘPink Elephant Beryl prospect, Keystone Mining District, Pennington County, South Dakota, USA
2.6km (1.6 miles) ⓘPhillip and Phyllis Lodes, Keystone Mining District, Pennington County, South Dakota, USA
References
Dana, Edward Salisbury; Dana, James Dwight (1892) A System of Mineralogy (6th ed.). John Wiley & Sons, Inc.
Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
 
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