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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Ankerite from
St Peter's Mine, Sparty Lea, Allendale, Northumberland, England, UK


Locality type:Mine
Classification
Species:Ankerite
Formula:Ca(Fe2+,Mg)(CO3)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ankerite data
Locality Data:Click here to view St Peter's Mine, Sparty Lea, Allendale, Northumberland, England, UK
Data Identifiers
Mindat Occurrence Record ID:148808
Long-form Identifier:1:3:148808:1
GUID (UUID V4):0
Nearest other occurrences of Ankerite
3.4km (2.1 miles) ⓘAllenheads Mine (Beaumont Mine), Allendale, Northumberland, England, UK
5.2km (3.2 miles) ⓘBarneycraig Mine, Coalcleugh, West Allen, Northumberland, England, UK
6.2km (3.9 miles) ⓘCoalcleugh Mine, Coalcleugh, West Allen, Northumberland, England, UK
6.2km (3.9 miles) ⓘPark Level Mine, Killhope Burn, Stanhope, County Durham, England, UK
8.0km (5.0 miles) ⓘHeartycleugh Mine, Carrshield, West Allen, Northumberland, England, UK
8.6km (5.3 miles) ⓘSmallcleugh Mine, Nenthead, Alston Moor, Eden, Cumbria, England, UK
8.6km (5.3 miles) ⓘBrownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor, Eden, Cumbria, England, UK
8.7km (5.4 miles) ⓘCarrs Mine, Nenthead, Alston Moor, Eden, Cumbria, England, UK
8.7km (5.4 miles) ⓘRampgill Mine, Nenthead, Alston Moor, Eden, Cumbria, England, UK
8.8km (5.4 miles) ⓘMiddlecleugh Upper Level, Nenthead, Alston Moor, Eden, Cumbria, England, UK
References
Dunham, K.C. (1990) Geology of the Northern Pennine Orefield, Volume 1, Tyne to Stainmore. 2nd edition, British Geological Survey.pp.164-165
 
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