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
Black Rock claim, Bendigo District (Riverside Mountain District), Riverside Mts (Siakariri), Riverside County, California, USA


Locality type:Claim
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 Black Rock claim, Bendigo District (Riverside Mountain District), Riverside Mts (Siakariri), Riverside County, California, USA
Data Identifiers
Mindat Occurrence Record ID:546321
Long-form Identifier:1:3:546321:3
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
15.5km (9.6 miles) ⓘMountaineer Mine (Calzona Mine; Mountainer Mine), Riverside Mountain, Bendigo District (Riverside Mountain District), Riverside Mts (Siakariri), Riverside County, California, USA
16.4km (10.2 miles) ⓘJacknife group (Bradley Mine; Morgan Mine; Morning Star Mine), Riverside Mountain, Bendigo District (Riverside Mountain District), Riverside Mts (Siakariri), Riverside County, California, USA
24.2km (15.1 miles) ⓘCopperstone Mine, La Paz Mining District (Weaver Mining District), Dome Rock Mountains, La Paz County, Arizona, USA
24.5km (15.2 miles) ⓘLangdon Mine (Langdon deposit; Maybery and Brown; Dioxide group; Hauser-Martin-Cheeseborough; Arentz-Perkins), Midland, Little Maria Mountains, Riverside County, California, USA
26.0km (16.1 miles) ⓘLucky Boy Mine [2] (Paddy Faulkner claim), Midland, Little Maria Mountains, Riverside County, California, USA
31.8km (19.7 miles) ⓘBertha group, Midland, Little Maria Mountains, Riverside County, California, USA
34.3km (21.3 miles) ⓘGeorge claims (Red Rock claims), McCoy Spring, Arlington District (Ironwood District), McCoy Mts (Ironwood Mts), Riverside County, California, USA
35.4km (22.0 miles) ⓘBlack Jack Mine (Black Jack group), Arlington Black Jack deposit (Arlington-Blackjack Mine; Blackjack Mine; Arlington Group Mines), McCoy Spring, Arlington District (Ironwood District), McCoy Mts (Ironwood Mts), Riverside County, California, USA
35.5km (22.0 miles) ⓘArlington No. 3 deposit (Black Metal Mine; Arlington No. 3 claim), Arlington Black Jack deposit (Arlington-Blackjack Mine; Blackjack Mine; Arlington Group Mines), McCoy Spring, Arlington District (Ironwood District), McCoy Mts (Ironwood Mts), Riverside County, California, USA
35.9km (22.3 miles) ⓘManganese Canyon Mine (Manganese Canyon group; Social Manganese Mine; Social Bray), Arlington Black Jack deposit (Arlington-Blackjack Mine; Blackjack Mine; Arlington Group Mines), McCoy Spring, Arlington District (Ironwood District), McCoy Mts (Ironwood Mts), Riverside County, California, USA
References
CDMG OFR 94-11 " Mineral Land Classification of the Eastern Half of Riverside Co. CA"
 
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