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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Heulandite Subgroup from
Loanhead Quarry, Beith, North Ayrshire, Scotland, UK


00018550017669483911718.jpg
Heulandite Subgroup

Loanhead Quarry, Beith, North Ayrshire, Scotland, UK
00018550017669483911718.jpg
Heulandite Subgroup

Loanhead Quarry, Beith, North Ayrshire, Scotland, UK
04979970017669483919629.jpg
Heulandite Subgroup

Loanhead Quarry, Beith, North Ayrshire, Scotland, UK
Locality type:Quarry
Classification
Species:'Heulandite Subgroup' (not an IMA approved species)
Formula:(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view Loanhead Quarry, Beith, North Ayrshire, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:6213
Long-form Identifier:1:3:6213:8
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
5.8km (3.6 miles) ⓘHartfield Moss, Renfrewshire, Scotland, UK
13.2km (8.2 miles) ⓘBoyleston Quarry, Barrhead, East Renfrewshire, Scotland, UK
18.5km (11.5 miles) ⓘPort Glasgow, Inverclyde, Scotland, UK
20.2km (12.5 miles) ⓘOld Kilpatrick, West Dunbartonshire, Scotland, UK
34.8km (21.6 miles) ⓘCampsie Fells, Stirling, Scotland, UK
47.5km (29.5 miles) ⓘEarlsburn Reservoir, Touch Muir (Touch Forest), Stirling, Scotland, UK
50.1km (31.1 miles) ⓘTouch Muir (Touch Forest), Stirling, Scotland, UK
52.7km (32.8 miles) ⓘTouch Hills, Stirling, Scotland, UK
References
[BMS]
 
and/or  
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