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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Pyrolusite from
Defiance Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA


Locality type:Mine
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Defiance Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:668367
Long-form Identifier:1:3:668367:2
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
4.1km (2.5 miles) ⓘDarwin Mining District, Darwin Hills, Inyo County, California, USA
13.9km (8.7 miles) ⓘDefense Mine, Lookout City, Lookout Mining District (Modoc Mining District), Argus Mts (Argus Range), Inyo County, California, USA
16.6km (10.3 miles) ⓘMinnietta Mine (Minnietta Mines; Minietta Mine; Minneatta; St. John), Lookout City, Lookout Mining District (Modoc Mining District), Argus Mts (Argus Range), Inyo County, California, USA
17.1km (10.6 miles) ⓘModoc Mine (Modock Mine), Lookout City, Lookout Mining District (Modoc Mining District), Argus Mts (Argus Range), Inyo County, California, USA
25.6km (15.9 miles) ⓘBig Four Mine (War Eagle; Perry Lead Mine), Panamint Butte, Cottonwood Mountains, Panamint Range (Panamint Mountains), Inyo County, California, USA
60.3km (37.5 miles) ⓘLillie Mine (Mature Consolidated), Slate Range Mining District (Arondo Mining District), Slate Range, Inyo County, California, USA
87.4km (54.3 miles) ⓘManganite Nos. 1-3 claims (Canam Mine; DV group), Wingate Wash, Panamint Range (Panamint Mountains), Inyo County, California, USA
87.5km (54.4 miles) ⓘManganite group (Chapin Manganese; Reward group; Reward Nos. 1-3 claims; Goodhope Nos. 1-2 claims; Manganese Nos. 1-4; Wingate Wash), Shore Line Butte, Inyo County, California, USA
References
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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