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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Chalcopyrite from
Gray Eagle Mine (Bachelor Mountain Mine), Yankee Fork Mining District, Custer County, Idaho, USA


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Gray Eagle Mine (Bachelor Mountain Mine), Yankee Fork Mining District, Custer County, Idaho, USA
Data Identifiers
Mindat Occurrence Record ID:447482
Long-form Identifier:1:3:447482:1
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
1.7km (1.1 miles) ⓘContinental Mine, Yankee Fork Mining District, Custer County, Idaho, USA
2.4km (1.5 miles) ⓘLucky Boy Mine, Yankee Fork Mining District, Custer County, Idaho, USA
3.1km (1.9 miles) ⓘYellow Bird Prospect, Yankee Fork Mining District, Custer County, Idaho, USA
5.3km (3.3 miles) ⓘBonanza Mine, Yankee Fork Mining District, Custer County, Idaho, USA
5.7km (3.6 miles) ⓘCharles Dickens Mine, Yankee Fork Mining District, Custer County, Idaho, USA
6.1km (3.8 miles) ⓘJulietta Mine, Yankee Fork Mining District, Custer County, Idaho, USA
7.0km (4.3 miles) ⓘMorrison Mine (George Washington Mine), Yankee Fork Mining District, Custer County, Idaho, USA
8.7km (5.4 miles) ⓘBuckskin Claims, Bay Horse Mining District, Custer County, Idaho, USA
8.8km (5.5 miles) ⓘBig Copper Nos. 1; 2 and 3 Claims, Yankee Fork Mining District, Custer County, Idaho, USA
9.1km (5.7 miles) ⓘWhy Not Group Mine (Hidden Treasure; Why Not; Eustace Mountain; Estes Gold; Estes Mountain Montana; Thunderbolt), Yankee Fork Mining District, Custer County, Idaho, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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