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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Psilomelane from
Kelly Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA


Locality type:Mine
Classification
Species:'Psilomelane' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Psilomelane data
Locality Data:Click here to view Kelly Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
Data Identifiers
Mindat Occurrence Record ID:322231
Long-form Identifier:1:3:322231:7
GUID (UUID V4):0
Nearest other occurrences of Psilomelane
2.5km (1.5 miles) ⓘCamp 9 deposit (Camp 9 Merchant; Cummings), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
3.2km (2.0 miles) ⓘNelson Bailey Mine (Nelson lease; Bailey Mine; Newhall Mine), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
3.4km (2.1 miles) ⓘAlameda Company No. 39 prospect (Alameda County #39), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
5.5km (3.4 miles) ⓘBeraudiere Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
5.9km (3.7 miles) ⓘBlack Jack Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
6.0km (3.7 miles) ⓘDewhirst Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
6.1km (3.8 miles) ⓘNewman Estacia property, Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA
6.2km (3.8 miles) ⓘCorral Hollow Manganese deposits, Corral Hollow, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
6.6km (4.1 miles) ⓘTaylor and Pitcher Mine, Tesla, Livermore Mining District (Tesla District), Alameda County, California, USA
15.0km (9.3 miles) ⓘFabian Mine, Castle Rock, Ladd-Buckeye Mining District, San Joaquin County, California, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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