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


09032370017366614872846.jpg
Beryl, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
00687430017866400933712.jpg
Beryl, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
01430970017272015654128.jpg
Beryl, etc.

Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Locality type:Mine
Classification
Species:Beryl
Formula:Be3Al2(Si6O18)
Comments:Occurs in pegmatite.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Albite1
- var Cleavelandite1
Data
Mineral Data:Click here to view Beryl data
Locality Data:Click here to view Hugo Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:68794
Long-form Identifier:1:3:68794:2
GUID (UUID V4):0
Nearest other occurrences of Beryl
1.0km (0.6 miles) ⓘMonte Carlo Prospect, Keystone Mining District, Pennington County, South Dakota, USA
1.2km (0.7 miles) ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
1.5km (0.9 miles) ⓘDan Patch West Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
1.7km (1.1 miles) ⓘNickel Plate 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
2.1km (1.3 miles) ⓘEdison 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
2.5km (1.6 miles) ⓘPink Elephant Beryl prospect, Keystone Mining District, Pennington County, South Dakota, USA
2.7km (1.7 miles) ⓘHenry Tin Occurrence, Keystone Mining District, Pennington County, South Dakota, USA
References
Rocks & Min.:60:110,112 & 116.
USGS Prof Paper 297B
Meeves, H.; Harrer, C.M.; Salsbury, M.H.; Konselman, A.S; Shannon, S.S. Jnr. (1966) Reconnaissance of beryllium-bearing pegmatite deposits in six western states: Arizona, Colorado, New Mexico, South Dakota, Utah, and Wyoming. Bureau of Mines Information Circular 8298. United States Department of the Interior 34 pp.p.32 - (Table A-1)
 
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