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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Brochantite from
Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK


03004490017271984996670.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
02746460017271998163122.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
01962310017405461966438.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
03004490017271984996670.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
04109900017376084306067.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
01549810017404190304918.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
03004490017271984996670.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
02746460017271998163122.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
01962310017405461966438.jpg
Brochantite

Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Locality type:Mine
Classification
Species:Brochantite
Formula:Cu4(SO4)(OH)6
Comments:Cooper & Stanley (1990): "Greg & Lettsom (1858: 327) described brochantite from Roughton Gill: 'lately in small but very perfect and brilliant crystals ... on a white quartzose rock, associated with fibrous malachite.' Specimens fitting this description may still be found on the extensive dumps below the 90fm level. An occasional associated species is tsumebite."
Habit:earthy
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Tsumebite2
Quartz1
Pyromorphite1
Data
Mineral Data:Click here to view Brochantite data
Locality Data:Click here to view Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:15094
Long-form Identifier:1:3:15094:3
GUID (UUID V4):0
Nearest other occurrences of Brochantite
0.3km (0.2 miles) ⓘMexico Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.4km (0.3 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.6km (0.4 miles) ⓘThief Gills, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.6km (0.4 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.8km (0.5 miles) ⓘRed Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.3km (0.8 miles) ⓘBrae Fell Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.7km (1.1 miles) ⓘHay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.8km (1.1 miles) ⓘShort Grain, Deer Hills, Caldbeck, Allerdale, Cumbria, England, UK
2.1km (1.3 miles) ⓘBrandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK
2.3km (1.4 miles) ⓘLow Pike north slopes, Caldbeck, Allerdale, Cumbria, England, UK
References
comprising a familiar account of minerals and their uses. Reeve and Benham, London [Collecting minerals, by B.M. Wright, 14-23].
Kingsbury, A.W.G. (xxxx) (MS2) Notes on the occurrence of gold in the Lake District.
Sowerby, H. (1850) Popular mineralogy
Dana, James D. (1854) A System of Mineralogy (4th ed.). p.1-849.
Greg, Robert Philips, Lettsom, William G. (1858) Manual of the Mineralogy of Great Britain and Ireland. John Van Voorst, London.
Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford.
Goodchild, J.G. (1885) Contributions towards a list of minerals occurring in Cumberland and Westmorland [part 3]. Transactions of the Cumberland Association for the Advancement of Literature and Science, 9. 175-199
Rudler, F. W. (1905) A Handbook to a Collection of the Minerals of the British Isles - Mostly selected from the Ludlam Collection, in the Museum of Practical Geology. 253pp.
Davidson, W.F. and Thomson, N. (1951) Some notes on the minerals of Westmorland and Cumberland. North West Naturalist, 23 (for 1948), 136-154.
Hartley, J. (1984) A list of minerals associated with the ore deposits of the Caldbeck Fells, Cumbria. Transactions of the Leeds Geological Association, 10 (3) 22-39
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
Bridges, Trevor F., Green, David, Rumsey, Michael S., Leppington, C. Michael (2011) A review of the mineralisation of the Roughton Gill mines, Caldbeck Fells, Cumbria: Part 3 Roughton Gill Mine. Journal of the Russell Society, 14. 3-23
 
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