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 Widow Mine (Black Angus Mine; Angus No. 2), Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA


Locality type:Mine
Classification
Species:Pyrolusite
Formula:Mn4+O2
Comments:Occurs with other Mn oxides.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Black Widow Mine (Black Angus Mine; Angus No. 2), Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
Data Identifiers
Mindat Occurrence Record ID:649795
Long-form Identifier:1:3:649795:8
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
3.6km (2.2 miles) ⓘChocolate Drop group (Chocolate Drop claim; Black Queen claim; Black Jack claim; Big Bear claim; War Eagle; Black Point; Dixie Queen; Alaskan; McKinney; Tadpole; Big Bear; Chipmunk; Chipmunk and Laskin; Ebony Group; Chocolate Drop Mine), Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
13.2km (8.2 miles) ⓘLugo Mine (American No. 3; Palo Verde Mine; Lost Donkey Mine; Jack Ass Mine; McIntyre Manganese deposit; McIntyre-Lugo), Palo Verde Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
25.4km (15.8 miles) ⓘPioneer Mine (Tolbard Mine), Whedon claims, Midway Well, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
25.9km (16.1 miles) ⓘVirginia Dare deposit (E. J. Beutler Mining claims; E.J. Beutler claims; Valentine Nos. 1 and 2 claims; Virginia Dare Nos. 1 and 2 claims; Bundle of Sticks Nos. 1 and 2 claims), Midway Well, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
26.7km (16.6 miles) ⓘTurtle prospect (Jet Black deposit; Hodges Manganese group; Hodges group of claims), Paymaster Landing, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
33.7km (20.9 miles) ⓘFools Folly Mine, Trigo Mountains Mining District (Cibola Mining District), La Paz County, Arizona, USA
38.0km (23.6 miles) ⓘBlack Diamond Mine group, Hidden Valley, U.S. Army Yuma Proving Grounds, Trigo Mountains Mining District (Cibola Mining District), La Paz County, Arizona, USA
38.8km (24.1 miles) ⓘPeggy B Mine, Trigo Mountains Mining District (Cibola Mining District), La Paz County, Arizona, USA
44.1km (27.4 miles) ⓘGeorge claims (Red Rock claims), McCoy Spring, Arlington District (Ironwood District), McCoy Mts (Ironwood Mts), Riverside County, California, USA
45.1km (28.0 miles) ⓘClip Mine, Clip, Hidden Valley, Silver Mining District, La Paz County, Arizona, USA
References
Morton, Paul K. (1977) Geology and Mineral Resources of Imperial County California. County Report 7. California Division of Mines and Geologyp.73
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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