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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Stilpnomelane from
Spies-Johnson Mine, Spies-Virgil Mine, Mineral Hills, Iron River, Iron County, Michigan, USA


Locality type:Mine
Classification
Species:Stilpnomelane
Formula:K4Fe482+[Si64Al8]O164(OH)52 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Stilpnomelane data
Locality Data:Click here to view Spies-Johnson Mine, Spies-Virgil Mine, Mineral Hills, Iron River, Iron County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:399110
Long-form Identifier:1:3:399110:7
GUID (UUID V4):0
Nearest other occurrences of Stilpnomelane
1.3km (0.8 miles) ⓘBates Mine (Includes Johnson), Mineral Hills, Iron River, Iron County, Michigan, USA
1.6km (1.0 miles) ⓘSherwood Mine, Mineral Hills, Iron River, Iron County, Michigan, USA
1.8km (1.1 miles) ⓘJames Mine (Osana Mine), Mineral Hills, Iron River, Iron County, Michigan, USA
2.0km (1.2 miles) ⓘMinckler Mine, Wauseca Mine (Wauseca-Aronson Mine; Konwinski Mine), Homer-Wauseca Group, Mineral Hills, Iron River, Iron County, Michigan, USA
2.0km (1.3 miles) ⓘDavidson Group, Mineral Hills, Iron River, Iron County, Michigan, USA
2.1km (1.3 miles) ⓘWauseca Mine (Wauseca-Aronson Mine; Konwinski Mine), Homer-Wauseca Group, Mineral Hills, Iron River, Iron County, Michigan, USA
2.5km (1.6 miles) ⓘForbes Mine, Mineral Hills, Iron River, Iron County, Michigan, USA
2.7km (1.7 miles) ⓘDelta Mine, Iron River, Iron County, Michigan, USA
2.8km (1.7 miles) ⓘDavidson No. 4 Mine (Wapama Mine; Purcell Mine), Davidson Group, Mineral Hills, Iron River, Iron County, Michigan, USA
2.9km (1.8 miles) ⓘSheridan Mine, Iron River, Iron County, Michigan, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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