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
Burrington Combe agate locality, Burrington, North Somerset, England, UK


Locality type:Occurrence
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 Burrington Combe agate locality, Burrington, North Somerset, England, UK
Data Identifiers
Mindat Occurrence Record ID:705235
Long-form Identifier:1:3:705235:4
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
8.8km (5.5 miles) ⓘBanwell Hill, Banwell, North Somerset, England, UK
17.6km (10.9 miles) ⓘDulcote Quarry, St Cuthbert Out, Mendip, Somerset, England, UK
27.3km (17.0 miles) ⓘCattybrook Quarry, Almondsbury, South Gloucestershire, Gloucestershire, England, UK
28.2km (17.5 miles) ⓘLyncombe Hill, Bath, Bath and North East Somerset, England, UK
40.4km (25.1 miles) ⓘRisca Quarry, Risca, Caerphilly, Wales, UK
68.8km (42.8 miles) ⓘLyme Regis Beach, Lyme Regis, West Dorset, Dorset, England, UK
69.9km (43.4 miles) ⓘPinhay Bay, Pinhay, Combpyne Rousdon, East Devon, Devon, England, UK
72.5km (45.1 miles) ⓘHaven Cliff, Axmouth, East Devon, Devon, England, UK
73.4km (45.6 miles) ⓘSeaton Hole, Seaton, East Devon, Devon, England, UK
74.0km (46.0 miles) ⓘEast Hill, Ottery St Mary, East Devon, Devon, England, UK
References
Render, Paul (n.d.) Paul Render Collection.
 
and/or  
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