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
Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway


04033210017339758442982.jpg
Prehnite

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
09801550017839651473880.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
07848880017839642816370.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
06372170017839651486454.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
04033210017339758442982.jpg
Prehnite

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
08813790017839642469783.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
07848880017839642816370.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
06683630017839643053030.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
04033210017339758442982.jpg
Prehnite

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
09801550017839651473880.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
08975250017839651481262.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
06372170017839651486454.jpg
Prehnite, etc.

Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Epidote3
Thaumasite2
Fluorapophyllite-(K)1
Calcite1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Lierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:767262
Long-form Identifier:1:3:767262:0
GUID (UUID V4):0
Nearest other occurrences of Prehnite
6.1km (3.8 miles) ⓘAsdøljuvet (Astøljuvet), Lier, Buskerud, Norway
11.6km (7.2 miles) ⓘStrømsås tunnel, Drammen, Buskerud, Norway
12.6km (7.8 miles) ⓘE 134 Road, Drammen, Buskerud, Norway
18.6km (11.5 miles) ⓘBallerud, Bærum (Baerum), Akershus, Norway
25.9km (16.1 miles) ⓘHamrefjell, Hamre, Øvre Eiker, Buskerud, Norway
28.4km (17.7 miles) ⓘNordre Jarlsberg Brygge, Selvik, Sande, Holmestrand, Vestfold, Norway
29.7km (18.4 miles) ⓘTorstvet (Torstvedt), Hurum, Asker, Akershus, Norway
30.9km (19.2 miles) ⓘHurum pukk AS Quarry, Filtvet, Hurum, Asker, Akershus, Norway
33.2km (20.6 miles) ⓘÅrvollåsen Natural Monument, Oslomarka, Oslo, Norway
33.5km (20.8 miles) ⓘSøndre Kleivan, Holmestrand, Vestfold, Norway
References
(n.d.) Atle Michalsen Collection.
 
and/or  
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