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
Creag Mhor (Creag Thor), Isle of Mull, Argyll and Bute, Scotland, UK


Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Creag Mhor (Creag Thor), Isle of Mull, Argyll and Bute, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:8820
Long-form Identifier:1:3:8820:6
GUID (UUID V4):0
Nearest other occurrences of Prehnite
1.0km (0.6 miles) ⓘCreag Brimishgan, Loch Na Keal, Isle of Mull, Argyll and Bute, Scotland, UK
4.4km (2.7 miles) ⓘAn Gearna, Ben More, Isle of Mull, Argyll and Bute, Scotland, UK
6.6km (4.1 miles) ⓘMaol nan Damh, Ben More, Isle of Mull, Argyll and Bute, Scotland, UK
6.7km (4.1 miles) ⓘBen More, Isle of Mull, Argyll and Bute, Scotland, UK
7.2km (4.4 miles) ⓘScarisdale wood (Scarisdale beach), Loch na Keal, Isle of Mull, Argyll and Bute, Scotland, UK
7.5km (4.7 miles) ⓘBeinn Fhada, Ben More, Isle of Mull, Argyll and Bute, Scotland, UK
13.0km (8.1 miles) ⓘSalen, Isle of Mull, Argyll and Bute, Scotland, UK
15.9km (9.9 miles) ⓘCarsaig Bay, Carsaig, Isle of Mull, Argyll and Bute, Scotland, UK
29.0km (18.0 miles) ⓘCamphouse, Ardnamurchan, Fort William and Ardnamurchan, Highland, Scotland, UK
80.7km (50.2 miles) ⓘSgurr nan Cearcall, Cuillin Hills, Minginish, Isle of Skye, Eilean á Chèo, Highland, Scotland, UK
References
[Specimen in the Natural History Museum, London]
 
and/or  
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