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
Elliott prospect (Elliot prospect), Caldwell Pines, East Mayacmas Mining District, Lake County, California, USA


Locality type:Prospect
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 Elliott prospect (Elliot prospect), Caldwell Pines, East Mayacmas Mining District, Lake County, California, USA
Data Identifiers
Mindat Occurrence Record ID:328016
Long-form Identifier:1:3:328016:4
GUID (UUID V4):0
Nearest other occurrences of Psilomelane
22.8km (14.2 miles) ⓘShaw and Mathews Mine, Pieta, Mendocino County, California, USA
26.2km (16.3 miles) ⓘBoyer Mine (Wheeler Mine; Shanks and Copps), Warm Springs Dam, Coast Range, Sonoma County, California, USA
26.4km (16.4 miles) ⓘShaw Mine, Shaw Ranch, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
26.7km (16.6 miles) ⓘMount Saint Helena, Robert Louis Stevenson State Park, The Palisades [range], Calistoga, Napa County, California, USA
32.9km (20.4 miles) ⓘCallizo prospect, Duncan Springs, Coastal Range, California, USA
33.8km (21.0 miles) ⓘHerndon Manganese No. 1 prospect, Clear Lake Oaks, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA
33.8km (21.0 miles) ⓘLa Bree claim (Manganese No. 2 claim), Indian Valley Reservoir, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA
34.7km (21.5 miles) ⓘPhillips Mine (Grand View Mine; White Rock Mine), Phillips Ranch, Laurel Dell, Lake County, California, USA
50.9km (31.6 miles) ⓘCleveland prospect (Homestead), Calpella, Coastal Range, California, USA
57.7km (35.8 miles) ⓘPowers prospect, Spanish Flat, Napa County, California, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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