Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
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Tetrahedrite Subgroup from
Barlocco Mine, Dumfries and Galloway, Scotland, UK


08053480017272021393438.jpg
Tetrahedrite Subgroup

Barlocco Mine, Dumfries and Galloway, Scotland, UK
04734610017628044839630.jpg
Tetrahedrite Subgroup, etc.

Barlocco Mine, Dumfries and Galloway, Scotland, UK
08053480017272021393438.jpg
Tetrahedrite Subgroup

Barlocco Mine, Dumfries and Galloway, Scotland, UK
08523670017622820351971.jpg
Tetrahedrite Subgroup, etc.

Barlocco Mine, Dumfries and Galloway, Scotland, UK
08053480017272021393438.jpg
Tetrahedrite Subgroup

Barlocco Mine, Dumfries and Galloway, Scotland, UK
08523670017622820351971.jpg
Tetrahedrite Subgroup, etc.

Barlocco Mine, Dumfries and Galloway, Scotland, UK
Locality type:Mine
Classification
Species:'Tetrahedrite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)Sb4S12S
Comments:Five specimens were analysed by Stephen Moreton in 2026 using SEM-EDS. Two gave Sb > As, so were tetrahedrite. Two gave As > Sb, so were tennantite. One gave Sb = As, placing it in the middle of the series. All look the same visually, as disseminations in quartz.
Confirmation
Validity:Confirmed
Confirmation Methods:SEM-EDS
Associated Minerals Based on Photo Data:
Calcite1
Quartz1
Data
Mineral Data:Click here to view Tetrahedrite Subgroup data
Locality Data:Click here to view Barlocco Mine, Dumfries and Galloway, Scotland, UK
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:26536
Long-form Identifier:1:3:26536:0
GUID (UUID V4):0
Nearest other occurrences of Tetrahedrite Subgroup
42.1km (26.1 miles) ⓘEmbleton Quarry, Embleton, Allerdale, Cumbria, England, UK
49.5km (30.8 miles) ⓘScar Crags, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
52.6km (32.7 miles) ⓘGoldscope Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
52.9km (32.9 miles) ⓘRoughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
52.9km (32.9 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
53.0km (32.9 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
54.4km (33.8 miles) ⓘNether Row Brow, Caldbeck, Allerdale, Cumbria, England, UK
55.2km (34.3 miles) ⓘOld Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UK
55.3km (34.3 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
55.3km (34.4 miles) ⓘCarrock Mine, Mungrisdale, Eden, Cumbria, England, UK
References
Betts, John (n.d.) John Betts website listing.
 
and/or  
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