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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Melanterite from
Black Iron Mine (Eagle No. 2 Mine; Iron Mask), Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA


Locality type:Mine
Classification
Species:Melanterite
Formula:Fe2+(H2O)6(SO4) · H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Melanterite data
Locality Data:Click here to view Black Iron Mine (Eagle No. 2 Mine; Iron Mask), Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:429575
Long-form Identifier:1:3:429575:4
GUID (UUID V4):0
Nearest other occurrences of Melanterite
0.9km (0.6 miles) ⓘBen Butler Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
1.6km (1.0 miles) ⓘGilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
1.6km (1.0 miles) ⓘEagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
31.7km (19.7 miles) ⓘGreenback Mine, Iron Hill, Lake County, Colorado, USA
36.0km (22.4 miles) ⓘBuckskin Joe Mine (Buckskin Joe; Phillips Mine), Alma Mining District, Park County, Colorado, USA
49.7km (30.9 miles) ⓘCinamon Gulch - Geneva Gulch, Montezuma Mining District (Snake River Mining District), Summit County, Colorado, USA
65.4km (40.6 miles) ⓘSulfate occurrence near Egeria, Yarmany, Routt County, Colorado, USA
65.7km (40.8 miles) ⓘEgeria, Toponas, Routt County, Colorado, USA
78.0km (48.5 miles) ⓘPrompt Pay Mine, Central City Mining District (Central Mining District), Gilpin 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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