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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Cordierite from
Bøylefoss Bridge, Froland, Agder, Norway


Locality type:Outcrop
Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Bøylefoss Bridge, Froland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:709289
Long-form Identifier:1:3:709289:3
GUID (UUID V4):0
Nearest other occurrences of Cordierite
9.4km (5.9 miles) ⓘAmtmannsvingen, Tvedestrand, Agder, Norway
10.3km (6.4 miles) ⓘLilleholt, Tvedestrand, Agder, Norway
12.7km (7.9 miles) ⓘGladstad, Tvedestrand, Agder, Norway
13.3km (8.3 miles) ⓘSolbutjernane, Tvedestrand, Agder, Norway
13.6km (8.5 miles) ⓘTangen, Tvedestrand, Agder, Norway
14.9km (9.3 miles) ⓘØsterådalen, Østerå, Tvedestrand, Agder, Norway
16.7km (10.4 miles) ⓘFaervik school, Tromøy, Arendal, Agder, Norway
17.0km (10.6 miles) ⓘSunde bridge, Snaresund, Tvedestrand, Agder, Norway
19.7km (12.2 miles) ⓘUHT granulite outcrop, Havsøysund, Hisøy, Arendal, Agder, Norway
20.5km (12.7 miles) ⓘPapikeite type locality, Ærøya, Arendal, Agder, Norway
References
Visser, Diedrich (1993) The Metamorphic Evolution of the Bamble Sector, south Norway: A Paragenetic and Mineral Chemical Study of Cordierite-orthoamphibole-bearing Rocks with Special Reference to Borosilicate-bearing Mineral Assemblages. Geologica Ultraiectina 39. Rijksuniversiteit
 
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