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
Buckholtz exploration, Iron River, Iron County, Michigan, USA


Locality type:Exploration Area
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 Buckholtz exploration, Iron River, Iron County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:398674
Long-form Identifier:1:3:398674:5
GUID (UUID V4):0
Nearest other occurrences of Stilpnomelane
0.3km (0.2 miles) ⓘNanaimo Mine, Beta Mine, Iron River, Iron County, Michigan, USA
0.5km (0.3 miles) ⓘBeta Mine, Iron River, Iron County, Michigan, USA
1.3km (0.8 miles) ⓘWickwire Mine, Hiawatha No. 1 mine, Hiawatha Group, Stambaugh, Iron River, Iron County, Michigan, USA
1.4km (0.9 miles) ⓘSheridan Mine, Iron River, Iron County, Michigan, USA
1.7km (1.1 miles) ⓘBrule Mine (Hiawatha No. 3), Hiawatha Group, Stambaugh, Iron River, Iron County, Michigan, USA
1.7km (1.1 miles) ⓘCortland Mine, Stambaugh Township, Iron County, Michigan, USA
1.8km (1.1 miles) ⓘDelta Mine, Iron River, Iron County, Michigan, USA
1.9km (1.2 miles) ⓘRiverton Group (Riverton; Iron River), Stambaugh, Iron River, Iron County, Michigan, USA
2.1km (1.3 miles) ⓘChatham Mine, Hiawatha No. 1 mine, Hiawatha Group, Stambaugh, Iron River, Iron County, Michigan, USA
2.2km (1.3 miles) ⓘMinckler Mine, Wauseca Mine (Wauseca-Aronson Mine; Konwinski Mine), Homer-Wauseca Group, Mineral Hills, Iron River, Iron County, Michigan, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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