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
Niagara Mine (Niagara group of claims; Niagara No. 1 through No. 6 claims; Niagra claims), Niagara Creek, Eureka Mining District, Yavapai County, Arizona, 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 Niagara Mine (Niagara group of claims; Niagara No. 1 through No. 6 claims; Niagra claims), Niagara Creek, Eureka Mining District, Yavapai County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:574205
Long-form Identifier:1:3:574205:9
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
1.0km (0.6 miles) ⓘBlack Mesa Mine (Black Mesa breccia pipe), Black Mesa, Eureka Mining District, Yavapai County, Arizona, USA
1.9km (1.2 miles) ⓘChance prospect (Chance claims; Chance group; Chance property; Chance No. 1 to No. 19 claims; Emerald group), Alum Creek headwaters area, Eureka Mining District, Yavapai County, Arizona, USA
2.2km (1.4 miles) ⓘBagdad Mine, Bagdad, Eureka Mining District, Yavapai County, Arizona, USA
2.6km (1.6 miles) ⓘCopper King Mine (Lawler Mines), Bagdad, Eureka Mining District, Yavapai County, Arizona, USA
3.3km (2.1 miles) ⓘMammoth Mine (Hubbard Mine), Eureka Mining District, Yavapai County, Arizona, USA
3.4km (2.1 miles) ⓘGoodenough Mine (Goodenough claim; Goodenough vein), Boulder Creek, Eureka Mining District, Yavapai County, Arizona, USA
4.1km (2.5 miles) ⓘVidano claims (Vidano No. 1 through No. 8), Bagdad, Eureka Mining District, Yavapai County, Arizona, USA
4.7km (2.9 miles) ⓘHillside Mine, Bozarth Mesa, Bagdad, Eureka Mining District, Yavapai County, Arizona, USA
4.9km (3.1 miles) ⓘMountain Spring Mine, Bagdad, Eureka Mining District, Yavapai County, Arizona, USA
5.2km (3.3 miles) ⓘStukey Mine (Stucky Mine; Lawrence group of claims), Bagdad, Eureka Mining District, Yavapai County, Arizona, USA
References
Stevens, H.J. (1911) A Manual of the Copper Industry of the World. The Copper Handbook Vol. 10
 
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