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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Serpierite from
Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK


00148020017819178179111.jpg
Serpierite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
00148020017819178179111.jpg
Serpierite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
09212380017819178178781.jpg
Serpierite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Locality type:Mine
Classification
Species:Serpierite
Formula:Ca(Cu2+,Zn2+)4(S6+O4)2(OH)6 · 3H2O
Comments:Bridges et al. (2008): "This extremely rare mineral at Red Gill was reported by Cooper and Stanley (1990) as soft, pale blue micaceous aggregates on cerussite, identified by XRD (NHM) on a specimen in the Peter Braithwaite Collection. It is probably a dump formed mineral."
Habit:soft micaceous aggregates on cerussite
Colour:pale blue
Abundance at site:Extremely Rare
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Associated Minerals Based on Photo Data:
Cerussite1
Galena1
Data
Mineral Data:Click here to view Serpierite data
Locality Data:Click here to view Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:17619
Long-form Identifier:1:3:17619:0
GUID (UUID V4):0
Nearest other occurrences of Serpierite
0.8km (0.5 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.0km (1.9 miles) ⓘOld Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.3km (2.1 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
3.6km (2.2 miles) ⓘOld Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UK
16.2km (10.0 miles) ⓘForce Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
44.8km (27.8 miles) ⓘTynebottom Mine, Garrigill, Alston Moor, Eden, Cumbria, England, UK
48.0km (29.8 miles) ⓘNentsberry Haggs Mine, Nenthead, Alston Moor, Eden, Cumbria, England, UK
49.0km (30.4 miles) ⓘBrownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor, Eden, Cumbria, England, UK
49.9km (31.0 miles) ⓘSmallcleugh Mine, Nenthead, Alston Moor, Eden, Cumbria, England, UK
79.1km (49.2 miles) ⓘCastleside Smelting Mill slag locality, Healeyfield, County Durham, England, UK
References
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
Bridges, T.F., Green, D.I., Rumsey, M.S., Leppington, C.M. (2008) A review of the mineralisation at Red Gill Mine, Caldbeck Fells, Cumbria, England. Journal of the Russell Society, 11. 29-47
 
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