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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Beryl from
Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK


Locality type:Mine
Classification
Species:Beryl
Formula:Be3Al2(Si6O18)
Comments:Kingsbury reference. Cooper & Stanley (1990): "As small poor crystals in 'gilbertite' in specimens in the Kingsbury & Russell Collections, BM(NH), collected by the former who noted 'from north-west branch (= south drive on the Harding vein) of the new low-level cross-cut to the Harding vein - the vein in which beryl occurs is apparently an early member of the suite; also in iron-stained mica on dump' (Kingsbury, unpublished manuscript). The reference of Lysons & Lysons (1816: cx) to beryl from 'Caldew-beck ... found by the Rev. Mr. Mandall' probably refers to apatite."
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Beryl data
Locality Data:Click here to view Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:2507
Long-form Identifier:1:3:2507:2
GUID (UUID V4):0
Nearest other occurrences of Beryl
12.6km (7.8 miles) ⓘWalla Crag, Borrowdale, Allerdale, Cumbria, England, UK
References
Kingsbury, A.W.G. (xxxx) (MS2) Notes on the occurrence of gold in the Lake District.
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.
Day, Harry (1999) BMS Database, British Micromount Society.
 
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