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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Hornblende Root Name Group from
New Tolgus Shaft, Tarewaste, Redruth, Cornwall, England, UK


Locality type:Shaft
Classification
Species:'Hornblende Root Name Group' (not an IMA approved species)
Formula:◻Ca2(C42+C3+)(AlSi7O22)W2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hornblende Root Name Group data
Locality Data:Click here to view New Tolgus Shaft, Tarewaste, Redruth, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:565459
Long-form Identifier:1:3:565459:8
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
2.3km (1.4 miles) ⓘNorth Wheal Crofty, Pool, Carn Brea, Cornwall, England, UK
2.8km (1.8 miles) ⓘWheal Crofty (Old Wheal Crofty; incl. Wheal Knight; Wheal Vernon), North Roskear, Camborne, Cornwall, England, UK
3.1km (1.9 miles) ⓘDolcoath Mine, Camborne, Cornwall, England, UK
3.2km (2.0 miles) ⓘNew Roskear Shaft, Dolcoath Mine, Camborne, Cornwall, England, UK
4.4km (2.7 miles) ⓘCamborne Vean Mine (incl. New Dolcoath Mine), Camborne, Cornwall, England, UK
4.5km (2.8 miles) ⓘTresavean Mine, Lanner, Lanner, Cornwall, England, UK
11.2km (6.9 miles) ⓘLower Treluswell, St Gluvias, Cornwall, England, UK
14.8km (9.2 miles) ⓘWest Godolphin Mine (Wheal Junket), Breage, Cornwall, England, UK
16.3km (10.1 miles) ⓘPenberthy Croft Mine, St Hilary, Cornwall, England, UK
17.1km (10.6 miles) ⓘGreat Retallack Mine, Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, Cornwall, England, UK
References
 
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