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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Chalcocite from
Greenhorn Mine (Greenhorn vein; Willow Creek Mines Inc.; Warren Brothers), French Gulch, French Gulch Mining District, Klamath Mountains, Shasta County, California, USA


Locality type:Mine
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Greenhorn Mine (Greenhorn vein; Willow Creek Mines Inc.; Warren Brothers), French Gulch, French Gulch Mining District, Klamath Mountains, Shasta County, California, USA
Data Identifiers
Mindat Occurrence Record ID:333231
Long-form Identifier:1:3:333231:3
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
13.8km (8.6 miles) ⓘMountain Monarch Mine (Monarch Mountain prospect), Monarch Mountain, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
15.0km (9.3 miles) ⓘIron Mountain Mine (Number 8; Confidence; Old Mine), Iron Mountain, Iron Mountain [town], West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
17.9km (11.1 miles) ⓘBalaklala Mine (Windy Camp Mine), Sugarloaf Mountain [3], West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
18.4km (11.5 miles) ⓘShasta King Mine (Lost Desert Mine; Trinity Mine), Mammoth Butte, Backbone District, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
23.0km (14.3 miles) ⓘMammoth Mine (Mammoth Copper Company; Anderson Mine; Mayflower Mine; Sheridan Mine; Gillispie Mine), Copper Crest group, Mammoth Butte, Backbone District, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
24.4km (15.1 miles) ⓘGolinsky Mine (Little Backbone Mine; Backbone Mine; Golinski Mine), Mammoth Butte, Backbone District, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
24.4km (15.2 miles) ⓘSilver King Mine, Redding, Redding Mining District, Shasta County, California, USA
32.2km (20.0 miles) ⓘThompson Mine (American Girl Mine), Mountain Gate, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
38.0km (23.6 miles) ⓘUnnamed Cu occurrence [1], Helena, North Fork Mining District, Salmon Mountains, Klamath Mountains, Trinity County, California, USA
38.2km (23.7 miles) ⓘHaley group (Minnie Haley group; Endless Chain A; Kane and Wilber group; Potter; Endless Chain and Missing Link), North Gray Rocks, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
References
(1908, September) The Copper Resources of California. Bulletin 50. California State Mining Bureaup.65
Laizure, Clyde McK (1921), Redding field division: California Mining Bureau. Report 17: 528
Tucker, W. Burling (1924b), Copper resources of Shasta County: California Mining Bureau. Report 20: 427, 445
Averill, Charles V. (1939), Mineral resources of Shasta County: California Division of Mines Report 35: 127.
 
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