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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Prehnite from
Bishopton tunnel, Bishopton, Renfrewshire, Scotland, UK


Locality type:Tunnel
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Greenockite9
Dumortierite3
Clinochlore3
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Bishopton tunnel, Bishopton, Renfrewshire, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:8833
Long-form Identifier:1:3:8833:6
GUID (UUID V4):0
Nearest other occurrences of Prehnite
0.6km (0.4 miles) ⓘBorrow Pit, Bishopton, Renfrewshire, Scotland, UK
3.8km (2.4 miles) ⓘOld Kilpatrick, West Dunbartonshire, Scotland, UK
13.7km (8.5 miles) ⓘBoyleston Quarry, Barrhead, East Renfrewshire, Scotland, UK
14.5km (9.0 miles) ⓘHartfield Moss, Renfrewshire, Scotland, UK
17.7km (11.0 miles) ⓘLoanhead Quarry, Beith, North Ayrshire, Scotland, UK
18.3km (11.4 miles) ⓘCampsie Fells, Stirling, Scotland, UK
25.0km (15.5 miles) ⓘCastle Hill, Kilbirnie, North Ayrshire, Scotland, UK
77.2km (48.0 miles) ⓘCorstorphine Hill, City of Edinburgh, Scotland, UK
80.0km (49.7 miles) ⓘGlenfarg, Ochil Hills, Perth and Kinross, Scotland, UK
80.3km (49.9 miles) ⓘOrrock Quarry, Kirkcaldy, Fife, Scotland, UK
References
Thomas Tompson (1840) The London, Edinburough and Dublin Philosophical Magazine and Science Journal Dec 3rd ser. pp 401-418
 
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