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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Malachite from
Armament Prospect, Index Mining District, Snohomish County, Washington, USA


Locality type:Prospect
Classification
Species:Malachite
Formula:Cu2(CO3)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Malachite data
Locality Data:Click here to view Armament Prospect, Index Mining District, Snohomish County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:107232
Long-form Identifier:1:3:107232:7
GUID (UUID V4):0
Nearest other occurrences of Malachite
3.8km (2.4 miles) ⓘCopper King Prospect, Trout Creek, Index Mining District, Snohomish County, Washington, USA
3.9km (2.4 miles) ⓘNon Pareil Prospect, Trout Creek, Index Mining District, Snohomish County, Washington, USA
8.0km (5.0 miles) ⓘDoris Prospect, North Fork of the Sultan River, Sultan Mining District, Snohomish County, Washington, USA
8.3km (5.2 miles) ⓘMineral Center Prospect, Silver Creek Mining District, Snohomish County, Washington, USA
10.4km (6.4 miles) ⓘMackinaw Mine, Monte Cristo Mining District, Snohomish County, Washington, USA
10.7km (6.7 miles) ⓘIowa Mine, North Fork of the Sultan River, Sultan Mining District, Snohomish County, Washington, USA
11.1km (6.9 miles) ⓘJerry Chatman Mine, Monte Cristo Mining District, Snohomish County, Washington, USA
11.7km (7.3 miles) ⓘKromona Mine, Sultan Mining District, Snohomish County, Washington, USA
13.4km (8.4 miles) ⓘBuckeye Mine, Index Mining District, Snohomish County, Washington, USA
17.4km (10.8 miles) ⓘMaloney Quarries, Grotto, King County, Washington, USA
References
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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