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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Chalcocite from
Levant Mine, Trewellard, St Just, Cornwall, England, UK


08274100017271999516539.jpg
Chalcocite, etc.

Levant Mine, Trewellard, St Just, Cornwall, England, UK
03777580017271998095873.jpg
Chalcocite, etc.

Levant Mine, Trewellard, St Just, Cornwall, England, UK
03878620017271998106834.jpg
Chalcocite

Levant Mine, Trewellard, St Just, Cornwall, England, UK
00435730017383966674172.jpg
Chalcocite

Levant Mine, Trewellard, St Just, Cornwall, England, UK
08274100017271999516539.jpg
Chalcocite, etc.

Levant Mine, Trewellard, St Just, Cornwall, England, UK
05465370017364055396876.jpg
Chalcocite, etc.

Levant Mine, Trewellard, St Just, Cornwall, England, UK
07540740017364055393680.jpg
Chalcocite

Levant Mine, Trewellard, St Just, Cornwall, England, UK
03186680017383416272597.jpg
Chalcocite

Levant Mine, Trewellard, St Just, Cornwall, England, UK
06174140017271999547897.jpg
Chalcocite, etc.

Levant Mine, Trewellard, St Just, Cornwall, England, UK
03777580017271998095873.jpg
Chalcocite, etc.

Levant Mine, Trewellard, St Just, Cornwall, England, UK
09664130017271998123903.jpg
Chalcocite

Levant Mine, Trewellard, St Just, Cornwall, England, UK
00435730017383966674172.jpg
Chalcocite

Levant Mine, Trewellard, St Just, Cornwall, England, UK
Locality type:Mine
Classification
Species:Chalcocite
Formula:Cu2S
Comments:Exceptional specimen in NHM, London 7.1 x 6.3 cm, xx 4.5 cm year 1899 [see Bancroft, Peter (1973) The World's Finest Minerals and Crystals]. [https://www.mindat.org/photo-275651.html]
Quality for species:Excellent - world class for species or very significant. (!!)
Significance:Classic locality for this mineral (see references.)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz21
Calcite11
Paratacamite9
Fluorapatite7
- var Carbonate-rich Fluorapatite7
Hematite6
Chalcopyrite5
Fluorite4
Bornite3
Pyrite2
Granite2
Cassiterite1
Brochantite1
Tennantite Subgroup1
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Levant Mine, Trewellard, St Just, Cornwall, England, UK
Photo GalleryView Gallery (85 photos)
Data Identifiers
Mindat Occurrence Record ID:3418
Long-form Identifier:1:3:3418:0
GUID (UUID V4):0
Localities for Chalcocite in this Region
Wheal Unity, Levant Mine, Trewellard, St Just, Cornwall, England, UK
Nearest other occurrences of Chalcocite
0.4km (0.2 miles) ⓘWheal Unity, Levant Mine, Trewellard, St Just, Cornwall, England, UK
0.6km (0.4 miles) ⓘSpearn Moor Mine, Spearn Consols (Wheal Spearn), Trewellard, St Just, Cornwall, England, UK
0.6km (0.4 miles) ⓘGeevor Mine, Pendeen, St Just, Cornwall, England, UK
0.7km (0.4 miles) ⓘCoronation Lode, Geevor Mine, Pendeen, St Just, Cornwall, England, UK
0.8km (0.5 miles) ⓘSpearn Consols (Wheal Spearn), Trewellard, St Just, Cornwall, England, UK
0.8km (0.5 miles) ⓘWheal Cock, Botallack Mine, Botallack, St Just, Cornwall, England, UK
0.8km (0.5 miles) ⓘWheal Hen, Botallack Mine, Botallack, St Just, Cornwall, England, UK
1.1km (0.7 miles) ⓘWheal Hazard, Botallack Mine, Botallack, St Just, Cornwall, England, UK
1.2km (0.7 miles) ⓘBotallack Mine, Botallack, St Just, Cornwall, England, UK
1.7km (1.0 miles) ⓘLoe Warren Zawn, Botallack, St Just, Cornwall, England, UK
References
Henwood, William Jory (1843) On the Metalliferous Deposits of Cornwall and Devon. Transactions of the Royal Geological Society of Cornwall, 5. 1-386
Smyth, Warington W.; Reeks, Trenham; Rudler, F. W. (1864) A Catalogue of the Mineral Collections in the Museum of Practical Geology. Museum of Practical Geology.
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.
Reid, Clement, Flett, J. S. (1907) The Geology of the Land's End District - Memoirs of the Geological Survey. Geological Survey of Great Britain.pp.108-112
Bancroft, Peter (1973) The World's Finest Minerals and Crystals.tav. XXXVII
 
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