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
Union Mine (Bell No. 2 Mine), Porcupine Mountains, 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 Union Mine (Bell No. 2 Mine), Porcupine Mountains, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:399747
Long-form Identifier:1:3:399747:5
GUID (UUID V4):0
Nearest other occurrences of Native Copper
3.6km (2.3 miles) ⓘScranton Mine, Silver City, Ontonagon County, Michigan, USA
3.8km (2.3 miles) ⓘCollins Mine, Ontonagon County, Michigan, USA
3.9km (2.4 miles) ⓘCleveland Mine, Ontonagon County, Michigan, USA
4.4km (2.8 miles) ⓘOntonagon Silver Mine, Silver City, Ontonagon County, Michigan, USA
4.6km (2.9 miles) ⓘNonesuch Mine, White Pine, Ontonagon County, Michigan, USA
6.0km (3.7 miles) ⓘNonesuch formation, White Pine, Ontonagon County, Michigan, USA
6.1km (3.8 miles) ⓘCuyahoga Mine, Porcupine Mountains, Ontonagon County, Michigan, USA
7.3km (4.5 miles) ⓘCarp Lake Mine, Porcupine Mountains, Ontonagon County, Michigan, USA
7.6km (4.7 miles) ⓘWhite Pine Mine, White Pine, Ontonagon County, Michigan, USA
9.6km (5.9 miles) ⓘWhite Pine Extension Mine (Pinex Mine), White Pine, Ontonagon County, Michigan, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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