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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Goethite from
Sherman Mine (Sherman tunnel; Leadville Corporation Mine; Day Mines; Hilltop Mine), Upper Iowa Gulch, Lake County, Colorado, USA


Locality type:Mine
Classification
Species:Goethite
Formula:Fe3+O(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Goethite data
Locality Data:Click here to view Sherman Mine (Sherman tunnel; Leadville Corporation Mine; Day Mines; Hilltop Mine), Upper Iowa Gulch, Lake County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:438111
Long-form Identifier:1:3:438111:2
GUID (UUID V4):0
Nearest other occurrences of Goethite
5.0km (3.1 miles) ⓘElk & Grey Swan group, Breece Hill, Leadville, Lake County, Colorado, USA
5.3km (3.3 miles) ⓘIbex Mine, Breece Hill, Leadville, Lake County, Colorado, USA
5.5km (3.4 miles) ⓘBig Four Mine, Leadville, Lake County, Colorado, USA
13.0km (8.1 miles) ⓘDolly Varden Mine (Varden Mine), Mount Bross, Alma Mining District, Park County, Colorado, USA
13.6km (8.5 miles) ⓘMoose Mine, Mount Bross, Alma Mining District, Park County, Colorado, USA
38.8km (24.1 miles) ⓘGilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
42.7km (26.5 miles) ⓘHandcart Gulch, Hall Valley (Hall's Valley), Montezuma Mining District, Park County, Colorado, USA
43.0km (26.7 miles) ⓘHall Valley (Hall's Valley), Montezuma Mining District, Park County, Colorado, USA
44.6km (27.7 miles) ⓘSnake River Bog Iron (Iron King), Montezuma Area, Summit County, Colorado, USA
49.0km (30.4 miles) ⓘGeneva Creek, Geneva District, Clear Creek 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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