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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Chalcopyrite from
Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK


01189740017271969319638.jpg
Chalcopyrite

Herodsfoot Mine, Lanreath, Cornwall, England, UK
04248430017271997275009.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
03142840017271997286102.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
08595510017369608778818.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
09642880017369608771761.jpg
Chalcopyrite

Herodsfoot Mine, Lanreath, Cornwall, England, UK
04248430017271997275009.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
03142840017271997286102.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
08595510017369608778818.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
01189740017271969319638.jpg
Chalcopyrite

Herodsfoot Mine, Lanreath, Cornwall, England, UK
04248430017271997275009.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
03142840017271997286102.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
08595510017369608778818.jpg
Chalcopyrite, etc.

Herodsfoot Mine, Lanreath, Cornwall, England, UK
Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Tetrahedrite Subgroup79
Quartz55
Galena52
Siderite25
Bournonite11
Pyrite10
Pyrargyrite1
Calcite1
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
Photo GalleryView Gallery (12 photos)
Data Identifiers
Mindat Occurrence Record ID:3186
Long-form Identifier:1:3:3186:8
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
7.4km (4.6 miles) ⓘWest Wheal Mary Ann (West Mary Ann Mine), Roseland, Menheniot, Cornwall, England, UK
8.3km (5.2 miles) ⓘWheal Mary Ann, Menheniot, Cornwall, England, UK
8.3km (5.2 miles) ⓘWheal Trelawny (incl. Wheal Honey), Menheniot, Cornwall, England, UK
8.9km (5.5 miles) ⓘSilver Vein Mine (Beacon Hill Mine; Wheal Fortescue), Lostwithiel, Cornwall, England, UK
10.4km (6.5 miles) ⓘWheal Pollard, Common Moor, St Cleer, Cornwall, England, UK
10.5km (6.5 miles) ⓘWheal Ludcott, Wrey and Ludcott United Mines, St Ive, Cornwall, England, UK
10.7km (6.7 miles) ⓘCaradon Consols, Crow's Nest, St Cleer, Cornwall, England, UK
10.8km (6.7 miles) ⓘWheal Wrey, Wrey and Ludcott United Mines, St Ive, Cornwall, England, UK
10.9km (6.8 miles) ⓘNew West Caradon Mine, West Caradon Mine, Crow's Nest, St Cleer, Cornwall, England, UK
11.0km (6.8 miles) ⓘDuke of Cornwall Mine, Lostwithiel, Cornwall, England, UK
References
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.
Henwood, W.J. (1871) Observations on Metalliferous Deposits: On the Lead Mines of Menheniot, Lanreath and Saint Pinnock. Transactions of the Royal Geological Society of Cornwall, 8. p.699-722.
Starkey, Roy (2012) The Herodsfoot mine, Lanreath, Cornwall, England. The Mineralogical Record, 43 (4) 411-486
 
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