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 Ace Mine (Doran Mine; Black Ace claim; New Ace No. 1 claim), Packard Well, Palen Mountains, Riverside 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 Black Ace Mine (Doran Mine; Black Ace claim; New Ace No. 1 claim), Packard Well, Palen Mountains, Riverside County, California, USA
Data Identifiers
Mindat Occurrence Record ID:546303
Long-form Identifier:1:3:546303:9
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
14.2km (8.8 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
14.4km (8.9 miles) ⓘGroce Mine (Parsons Mine; Black Strike claim; Black Strike deposit; Grosse Mine; Arlington Group Mines), 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
14.7km (9.1 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
14.8km (9.2 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
17.3km (10.8 miles) ⓘBertha group, Midland, Little Maria Mountains, Riverside County, California, USA
19.2km (11.9 miles) ⓘGeorge claims (Red Rock claims), McCoy Spring, Arlington District (Ironwood District), McCoy Mts (Ironwood Mts), Riverside County, California, USA
20.3km (12.6 miles) ⓘLucky Boy Mine [2] (Paddy Faulkner claim), Midland, Little Maria Mountains, Riverside County, California, USA
24.3km (15.1 miles) ⓘLangdon Mine (Langdon deposit; Maybery and Brown; Dioxide group; Hauser-Martin-Cheeseborough; Arentz-Perkins), Midland, Little Maria Mountains, Riverside County, California, USA
46.3km (28.8 miles) ⓘBlack Rock claim, Bendigo District (Riverside Mountain District), Riverside Mts (Siakariri), Riverside County, California, USA
53.0km (33.0 miles) ⓘMountaineer Mine (Calzona Mine; Mountainer Mine), Riverside Mountain, Bendigo District (Riverside Mountain District), Riverside Mts (Siakariri), Riverside County, California, USA
References
Saul, R.B., Evans, J.R., and Gray, C.H. (1970) Mines and mineral resources of Riverside County. California Division of Mines and Geology County Report 9. Unpublished manuscript: 963
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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