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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Tenorite from
Penberthy Croft Mine, St Hilary, Cornwall, England, UK


09439160017808846496399.jpg
Tenorite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
09439160017808846496399.jpg
Tenorite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00057760017807909181635.jpg
Tenorite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Locality type:Mine
Classification
Species:Tenorite
Formula:CuO
Formation:Secondary
Comments:Associated with Cuprite. Recorded by John Betterton (1996)
Habit:Earthy
Colour:Black
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Very Rare
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Cuprite2
Aurichalcite1
Brochantite1
Native Copper1
Quartz1
Data
Mineral Data:Click here to view Tenorite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:20241
Long-form Identifier:1:3:20241:3
GUID (UUID V4):0
Nearest other occurrences of Tenorite
1.7km (1.1 miles) ⓘRetallack Mine, St Hilary, Cornwall, England, UK
1.7km (1.1 miles) ⓘWheal Elizabeth, St Erth, Cornwall, England, UK
2.6km (1.6 miles) ⓘWheal Fortune (West Wheal Fortune; Great Wheal Fortune), Truthwall, Ludgvan, Cornwall, England, UK
2.7km (1.7 miles) ⓘGwallon Mine, St Hilary, Cornwall, England, UK
2.9km (1.8 miles) ⓘWest Godolphin Mine (Wheal Junket), Breage, Cornwall, England, UK
3.6km (2.2 miles) ⓘWheal Virgin, Marazion, Cornwall, England, UK
4.0km (2.5 miles) ⓘWheal Kayle, Hayle, Cornwall, England, UK
4.0km (2.5 miles) ⓘWheal Bolton, Crowlas, Ludgvan, Cornwall, England, UK
4.2km (2.6 miles) ⓘWheal Providence, Wheal Tremayne, Fraddam, Gwinear-Gwithian, Cornwall, England, UK
4.4km (2.7 miles) ⓘGreat Work Mine (incl. Leeds Mine), Godolphin Cross, Breage, Cornwall, England, UK
References
Betterton, J. (1996) Tenorite from Penberthy Croft Mine, Cornwall. UK Journal of Mines and Minerals 17, 18
Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines and Minerals 20, Rockbottom Publications. 7-37
 
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