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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Native Copper from
Gruakollen, Grua, Lunner, Akershus, Norway


Locality type:Residential Area
Classification
Species:Native Copper
Formula:Cu
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Native Copper data
Locality Data:Click here to view Gruakollen, Grua, Lunner, Akershus, Norway
Data Identifiers
Mindat Occurrence Record ID:767795
Long-form Identifier:1:3:767795:3
GUID (UUID V4):0
Nearest other occurrences of Native Copper
31.1km (19.3 miles) ⓘBjønndalen Quarry, Nittedal, Akershus, Norway
53.1km (33.0 miles) ⓘButtedal Mine, Tranby, Lier, Buskerud, Norway
53.8km (33.4 miles) ⓘSkuterud Mines, Modum West, Modum, Buskerud, Norway
65.1km (40.5 miles) ⓘNordskjerpet, Konnerudkollen Mines (Konnerud Mines), Konnerud, Drammen, Buskerud, Norway
65.2km (40.5 miles) ⓘGrimsrud Molybdenum prospect, Hurum, Asker, Akershus, Norway
79.6km (49.5 miles) ⓘUnnamed Quarry, Granli, Kongsvinger, Innlandet, Norway
84.6km (52.6 miles) ⓘSøndre Kleivan, Holmestrand, Vestfold, Norway
85.2km (52.9 miles) ⓘBjerkeli residental area, Botne, Holmestrand, Vestfold, Norway
85.5km (53.1 miles) ⓘTvillingbru, Holmestrand, Vestfold, Norway
87.0km (54.0 miles) ⓘRailway tunnel, Fjordveien, Holmestrand, Vestfold, Norway
References
Brastad, Kjartan (1982) Gedigent kobber og markasitt fra Grua [Native Copper and Marcasite from Grua]. Mineralogisk-Geologisk Museum - Universitetet i Oslo- Interne notater, Geologisk Museums venner. 106
 
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