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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Siderite from
Hawkeye Mine, Monarch Mining District, Chaffee County, Colorado, USA


Locality type:Mine
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view Hawkeye Mine, Monarch Mining District, Chaffee County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:68247
Long-form Identifier:1:3:68247:9
GUID (UUID V4):0
Nearest other occurrences of Siderite
1.0km (0.6 miles) ⓘMadonna Mine, Monarch Mining District, Chaffee County, Colorado, USA
5.4km (3.4 miles) ⓘIron King, Tomichi Mining District (White Pine Mining District), Gunnison County, Colorado, USA
28.8km (17.9 miles) ⓘRawley Mine, Bonanza Mining District (Kerber Creek Mining District; Blake Mining District), Saguache County, Colorado, USA
29.2km (18.1 miles) ⓘLiberty Hill Mine (Walter Higham's Mine), Turret Mining District, Chaffee County, Colorado, USA
31.2km (19.4 miles) ⓘBlack Beauty Deposit (Crater Deposit), Cleora Mining District, Chaffee County, Colorado, USA
33.5km (20.8 miles) ⓘBlackjack Group, Turret Mining District, Chaffee County, Colorado, USA
33.5km (20.8 miles) ⓘVenture Lode Mine 1933, Turret Mining District, Chaffee County, Colorado, USA
52.9km (32.9 miles) ⓘYellow Pine Barite Vein Occurrence, Waugh Mountain Area, Fremont County, Colorado, USA
56.5km (35.1 miles) ⓘCotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
57.2km (35.6 miles) ⓘOrient Iron Mine (Caesar; MS 11400; Valley View; MS 8940; Vivia B.; MS 4988; Runaway; MS 1539; Prospector; MS 1505; Villa Grove), Orient Mining District, Saguache County, Colorado, USA
References
Rocks & Min.:65:59.
 
and/or  
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