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
East Combe Mine (Coombe Valley Consols; Swymbridge Mine), Swimbridge, North Devon, Devon, England, UK


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Siderite2
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view East Combe Mine (Coombe Valley Consols; Swymbridge Mine), Swimbridge, North Devon, Devon, England, UK
Data Identifiers
Mindat Occurrence Record ID:658010
Long-form Identifier:1:3:658010:0
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.7km (1.1 miles) ⓘBestridge quarry, Swimbridge, North Devon, Devon, England, UK
4.4km (2.7 miles) ⓘHigh Down Quarry, West Buckland, North Devon, Devon, England, UK
13.4km (8.3 miles) ⓘBampfylde Mine (Prince Regent Mine; Poltimore Mine; North Molton copper mine), North Molton, North Devon, Devon, England, UK
17.0km (10.6 miles) ⓘOld Combe Martin Mine, Combe Martin, North Devon, Devon, England, UK
17.2km (10.7 miles) ⓘKnap Down Mine, Combe Martin, North Devon, Devon, England, UK
17.3km (10.8 miles) ⓘEisen Hill Mines (incl. Molds Mine; Hoe Combe Mine), Braunton, North Devon, Devon, England, UK
18.2km (11.3 miles) ⓘSherry Combe, Combe Martin, North Devon, Devon, England, UK
18.3km (11.4 miles) ⓘLester Point, Combe Martin, North Devon, Devon, England, UK
20.6km (12.8 miles) ⓘHeddons Mouth, Martinhoe, North Devon, Devon, England, UK
20.7km (12.9 miles) ⓘWest Woody Bay, Woody Bay, Martinhoe, North Devon, Devon, England, UK
References
Robert Broughton specimen
 
and/or  
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