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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Chalcedony from
Haytor Mine, Ilsington, Teignbridge, Devon, England, UK


Locality type:Mine
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Haytor Mine, Ilsington, Teignbridge, Devon, England, UK
Data Identifiers
Mindat Occurrence Record ID:3357
Long-form Identifier:1:3:3357:2
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
13.2km (8.2 miles) ⓘBuller's Hill quarry, Haldon Forrest, Kenn, Teignbridge, Devon, England, UK
25.1km (15.6 miles) ⓘNorth Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, West Devon, Devon, England, UK
28.8km (17.9 miles) ⓘWalkham and Poldice Mine (Wheal Walkham), Buckland Monachorum, West Devon, Devon, England, UK
35.5km (22.0 miles) ⓘGunnislake Clitters Mine, Clitters United Mines, Gunnislake, Calstock, Cornwall, England, UK
36.4km (22.6 miles) ⓘNorth Hooe Mine, Tamar Consols (Tamar Mines), Bere Alston Mines, Bere Ferrers, West Devon, Devon, England, UK
38.1km (23.7 miles) ⓘEast Hill, Ottery St Mary, East Devon, Devon, England, UK
40.2km (25.0 miles) ⓘDunscombe Hill Cliff, Sidmouth, East Devon, Devon, England, UK
40.4km (25.1 miles) ⓘWeston Mouth, Sidmouth, East Devon, Devon, England, UK
47.7km (29.6 miles) ⓘSeaton Hole, Seaton, East Devon, Devon, England, UK
49.7km (30.9 miles) ⓘHaven Cliff, Axmouth, East Devon, Devon, England, UK
References
Embrey, Peter G., Symes, Robert F. (1987) Minerals of Cornwall and Devon. British Museum (Natural History) and the Mineralogical Record, Inc., London and Tucson, AZ.
 
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