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
Railway tunnel, Fjordveien, Holmestrand, Vestfold, Norway


Locality type:Tunnel
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 Railway tunnel, Fjordveien, Holmestrand, Vestfold, Norway
Data Identifiers
Mindat Occurrence Record ID:780562
Long-form Identifier:1:3:780562:2
GUID (UUID V4):0
Nearest other occurrences of Prehnite
0.2km (0.1 miles) ⓘRove, Botne, Holmestrand, Vestfold, Norway
0.4km (0.2 miles) ⓘHvitsteinbakken, Holmestrand, Vestfold, Norway
1.4km (0.8 miles) ⓘHvittingfossveien, Kleivbrottet, Holmestrand, Vestfold, Norway
1.7km (1.1 miles) ⓘGrefsrud, Holmestrand, Vestfold, Norway
1.9km (1.2 miles) ⓘTvillingbru, Holmestrand, Vestfold, Norway
1.9km (1.2 miles) ⓘSjøskogen, Holmestrand, Vestfold, Norway
2.1km (1.3 miles) ⓘRamberg terrasse, Botne, Holmestrand, Vestfold, Norway
2.1km (1.3 miles) ⓘFibo AS, Grefsrud, Holmestrand, Vestfold, Norway
2.2km (1.4 miles) ⓘKleivanveien, Botne, Holmestrand, Vestfold, Norway
2.5km (1.6 miles) ⓘBjerkeli residental area, Botne, Holmestrand, Vestfold, Norway
References
Nordrum, Fred Steinar (2012) Noen funn av mineraler i Norge 2011-2012 [Some finds of minerals in Norway 2011-2012]. Norsk Bergverksmuseum Skrift, 49. 117-124
 
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