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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Tourmaline from
Auchengray Fell, New Abbey, Dumfries and Galloway, Scotland, UK


Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Auchengray Fell, New Abbey, Dumfries and Galloway, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:1216640
Long-form Identifier:1:3:1216640:6
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
51.4km (31.9 miles) ⓘBurdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK
51.4km (32.0 miles) ⓘOverend Quarry, Whitehaven, Copeland, Cumbria, England, UK
52.2km (32.4 miles) ⓘCarrock Mine, Mungrisdale, Eden, Cumbria, England, UK
52.4km (32.6 miles) ⓘGrains Gill, Mungrisdale, Eden, Cumbria, England, UK
52.6km (32.7 miles) ⓘCaldew Valley, Mungrisdale, Eden, Cumbria, England, UK
52.7km (32.7 miles) ⓘPoddy Gill, Mungrisdale, Eden, Cumbria, England, UK
53.2km (33.0 miles) ⓘForce Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
53.3km (33.1 miles) ⓘHen Comb, Loweswater Fell, Loweswater, Allerdale, Cumbria, England, UK
54.2km (33.7 miles) ⓘScar Crags, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
54.3km (33.7 miles) ⓘCobalt Mine, Scar Crag, Causey Pike, Above Derwent, Allerdale, Cumbria, England, UK
References
Render, Paul (n.d.) Paul Render Collection.
 
and/or  
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