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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Quartz from
Island Mountain Mine (Dahrman group; Island Mountain Consolidated Mine; Annex; Leach; Merritt Gore; Shotgun), Moose Peak, Island Mountain, Trinity County, California, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Island Mountain Mine (Dahrman group; Island Mountain Consolidated Mine; Annex; Leach; Merritt Gore; Shotgun), Moose Peak, Island Mountain, Trinity County, California, USA
Data Identifiers
Mindat Occurrence Record ID:792013
Long-form Identifier:1:3:792013:4
GUID (UUID V4):0
Nearest other occurrences of Quartz
22.9km (14.2 miles) ⓘBlue Jay Mine (Blue Jay claim; Blue Bird Mine; McKnight; McKnight), Three Forks, Trinity County, California, USA
25.9km (16.1 miles) ⓘLucky Sunday and Billy Sunday claims (Lucky Sunday claim; Billy Sunday claim), Three Forks, Trinity County, California, USA
27.2km (16.9 miles) ⓘDouble-A prospect (Double A prospect), Van Horn Peak, Trinity County, California, USA
32.0km (19.9 miles) ⓘCovelo, Round Valley, Coastal Range, California, USA
39.2km (24.4 miles) ⓘHale Creek Mine, Mad River Rock, Trinity County, California, USA
39.7km (24.6 miles) ⓘBrookite occurrence, Mad River Rock, Trinity County, California, USA
44.4km (27.6 miles) ⓘLaytonville Quarry, Laytonville, Coastal Range, California, USA
49.9km (31.0 miles) ⓘPoint Delgada, Shelter Cove, Humboldt County, California, USA
55.8km (34.7 miles) ⓘDeep Hole Mine (Eden Valley Mine), Eden Valley, Hearst, Coastal Range, California, USA
58.4km (36.3 miles) ⓘBlack Bear Mine, Knob, Harrison Gulch Mining District, Klamath Mountains, Shasta County, California, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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