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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Marcasite from
Kromona Mine, Sultan Mining District, Snohomish County, Washington, USA


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Kromona Mine, Sultan Mining District, Snohomish County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:142012
Long-form Identifier:1:3:142012:8
GUID (UUID V4):0
Nearest other occurrences of Marcasite
3.1km (1.9 miles) ⓘMountain Cedar Prospect, North Fork of the Sultan River, Sultan Mining District, Snohomish County, Washington, USA
8.8km (5.5 miles) ⓘCalumet Prospect, North Fork of the Sultan River, Sultan Mining District, Snohomish County, Washington, USA
10.1km (6.2 miles) ⓘSultan King Mine, North Fork of the Sultan River, Sultan Mining District, Snohomish County, Washington, USA
11.7km (7.3 miles) ⓘSunset Mine, Trout Creek, Index Mining District, Snohomish County, Washington, USA
21.8km (13.5 miles) ⓘHecla Claim, Marten Creek, Silverton Mining District, Snohomish County, Washington, USA
22.0km (13.7 miles) ⓘCliff Claim, Marten Creek, Silverton Mining District, Snohomish County, Washington, USA
46.6km (29.0 miles) ⓘRed Face Zone, Middle of the Snoqualmie River, Miller River Mining District, King County, Washington, USA
55.3km (34.4 miles) ⓘGlacier Peak Mine, Glacier Peak Mining District, Snohomish County, Washington, USA
60.3km (37.5 miles) ⓘCopper Queen Prospect, Mineral Creek, Kittitas County, Washington, USA
63.9km (39.7 miles) ⓘEldorado, Railroad Creek Mining District, Chelan County, Washington, USA
References
Derkey, Robert E., Joseph, Nancy L., Lasmanis, Raymond (1990, November) Metal Mines of Washington - Preliminary Report. Open File Report 90-18. Washington Division of Geology and Earth Resources
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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