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
Norwich Mine (Essex Mine), Norwich, Ontonagon County, Michigan, USA


Locality type:Mine
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 Norwich Mine (Essex Mine), Norwich, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:101956
Long-form Identifier:1:3:101956:8
GUID (UUID V4):0
Nearest other occurrences of Native Copper
0.5km (0.3 miles) ⓘOhio Trap Rock Mine, Norwich, Ontonagon County, Michigan, USA
1.0km (0.6 miles) ⓘCopper Crown Mine, Ontonagon County, Michigan, USA
1.8km (1.1 miles) ⓘPittsburg Mine, Norwich, Ontonagon County, Michigan, USA
3.1km (1.9 miles) ⓘClifton Mine, Norwich, Ontonagon County, Michigan, USA
4.5km (2.8 miles) ⓘCascade prospect, Matchwood Township, Ontonagon County, Michigan, USA
8.1km (5.0 miles) ⓘDerby Mine, Norwich, Ontonagon County, Michigan, USA
12.0km (7.4 miles) ⓘOntonagon Boulder, Ontonagon River, Ontonagon County, Michigan, USA
12.8km (7.9 miles) ⓘVictoria Mine, Victoria, Ontonagon County, Michigan, USA
16.1km (10.0 miles) ⓘWhite Pine Mine, White Pine, Ontonagon County, Michigan, USA
16.2km (10.1 miles) ⓘOntonagon River, Ontonagon County, Michigan, USA
References
Dana 6: 520.
 
and/or  
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