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
Dean Quarry, St Keverne, Cornwall, England, UK


Locality type:Quarry
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 Dean Quarry, St Keverne, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:6276
Long-form Identifier:1:3:6276:3
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
1.3km (0.8 miles) ⓘWest of England Quarry, Porthoustock, St Keverne, Cornwall, England, UK
2.8km (1.8 miles) ⓘCoverack Cove, Coverack, St Keverne, Cornwall, England, UK
2.9km (1.8 miles) ⓘPorthallow (Porthalla), St Keverne, Cornwall, England, UK
5.3km (3.3 miles) ⓘPedn Boar Point, Coverack, St Keverne, Cornwall, England, UK
10.1km (6.3 miles) ⓘCadgwith, Ruan Minor, Grade-Ruan, Cornwall, England, UK
12.8km (8.0 miles) ⓘHousel Bay, Landewednack, Cornwall, England, UK
13.5km (8.4 miles) ⓘPolurian Cove, Mullion, Cornwall, England, UK
14.5km (9.0 miles) ⓘMullion Island, Mullion, Cornwall, England, UK
15.6km (9.7 miles) ⓘLower Treluswell, St Gluvias, Cornwall, England, UK
20.7km (12.9 miles) ⓘTresavean Mine, Lanner, Lanner, Cornwall, England, UK
References
 
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