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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Quartz from
Conboy Mine (Conroy Mine), Gillham, Sevier County, Arkansas, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Comments:Occurs in quartz veins in Stanley Shale.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Conboy Mine (Conroy Mine), Gillham, Sevier County, Arkansas, USA
Data Identifiers
Mindat Occurrence Record ID:58905
Long-form Identifier:1:3:58905:7
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.4km (0.9 miles) ⓘAntimony Bluff Mine, Gillham, Sevier County, Arkansas, USA
1.9km (1.2 miles) ⓘSteward Mine (Stewart mine), Gillham, Sevier County, Arkansas, USA
1.9km (1.2 miles) ⓘAmerican Star Mine (May Mines; May prospect), Gillham, Sevier County, Arkansas, USA
4.0km (2.5 miles) ⓘHarrell Mine, Gillham, Sevier County, Arkansas, USA
4.7km (2.9 miles) ⓘNew Discovery prospect, Gillham, Sevier County, Arkansas, USA
6.0km (3.7 miles) ⓘWerner No. 2 Mine, Gillham, Sevier County, Arkansas, USA
6.0km (3.7 miles) ⓘWolfton Mine (Bob Wolf Mine), Gillham, Sevier County, Arkansas, USA
9.0km (5.6 miles) ⓘWerner No. 1 Mine, Gillham, Sevier County, Arkansas, USA
10.3km (6.4 miles) ⓘValley Mines, Gillham, Sevier County, Arkansas, USA
12.6km (7.8 miles) ⓘPoor Boy Mine (Stibnite Production Corporation Mine), Gillham, Sevier County, Arkansas, USA
References
Rocks & Min.:63:123.
 
and/or  
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