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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Columbite-(Fe)-Columbite-(Mn) Series from
Eight Mile Park, Eight Mile Park Pegmatite Mining District, Fremont County, Colorado, USA


Locality type:Park
Classification
Species:'Columbite-(Fe)-Columbite-(Mn) Series' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Columbite-(Fe)-Columbite-(Mn) Series data
Locality Data:Click here to view Eight Mile Park, Eight Mile Park Pegmatite Mining District, Fremont County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:35063
Long-form Identifier:1:3:35063:1
GUID (UUID V4):0
Nearest other occurrences of Columbite-(Fe)-Columbite-(Mn) Series
3.4km (2.1 miles) ⓘMica Lode Mine (Mica Hill Mine), Eight Mile Park Pegmatite Mining District, Fremont County, Colorado, USA
3.4km (2.1 miles) ⓘMeyers quarry (Meyers Quarry; Meyers-Halstead Quarry; Suzana Claims; Suzanna Claims; Royal Gorge No. 2), Eight Mile Park Pegmatite Mining District, Fremont County, Colorado, USA
21.0km (13.0 miles) ⓘChief lithium pegmatite, Texas Creek Area, Fremont County, Colorado, USA
21.4km (13.3 miles) ⓘJim 8 Occurrence, Lookout Mountain Area, Fremont County, Colorado, USA
21.8km (13.5 miles) ⓘDevil's Hole Mine, Fremont County, Colorado, USA
24.9km (15.5 miles) ⓘBull Gulch Mica Mine, Fremont County, Colorado, USA
25.9km (16.1 miles) ⓘPine Creek drainage (Pine Gulch), Gem Park complex, Fremont County, Colorado, USA
30.4km (18.9 miles) ⓘCotopaxi Feldspar Mine (Cotopaxi Feldspar prospect; Henry pegmatite), Cotopaxi Pegmatite area, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
30.8km (19.2 miles) ⓘVermiculite Mine (MRDS - 10013422), Gem Park complex, Fremont County, Colorado, USA
40.3km (25.0 miles) ⓘMeyers Ranch, Guffey Mining District, Park County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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