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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Serpentine Subgroup from
Boulder Creek Mine (Burke Mine), Cle Elum Mining District, Washington, USA


Locality type:Mine
Classification
Species:'Serpentine Subgroup' (not an IMA approved species)
Formula:D3[Si2O5](OH)4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Serpentine Subgroup data
Locality Data:Click here to view Boulder Creek Mine (Burke Mine), Cle Elum Mining District, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:125705
Long-form Identifier:1:3:125705:2
GUID (UUID V4):0
Nearest other occurrences of Serpentine Subgroup
0.6km (0.3 miles) ⓘBoulder Creek Olivine Occurrence, Cle Elum River, Cle Elum Mining District, Kittitas County, Washington, USA
1.5km (0.9 miles) ⓘDenney Prospect, Cle Elum River, Cle Elum Mining District, Kittitas County, Washington, USA
1.7km (1.1 miles) ⓘCle Elum Iron Prospect, Cle Elum Mining District, Kittitas County, Washington, USA
2.9km (1.8 miles) ⓘSilver Bullion Claim, Cle Elum Mining District, Kittitas County, Washington, USA
4.4km (2.7 miles) ⓘMount Hawkins Mine, Cle Elum River, Cle Elum Mining District, Kittitas County, Washington, USA
4.9km (3.0 miles) ⓘDolphin Mine, Cle Elum River, Cle Elum Mining District, Kittitas County, Washington, USA
10.9km (6.8 miles) ⓘElsner (The Fish Eagle), Cle Elum Mining District, Kittitas County, Washington, USA
11.9km (7.4 miles) ⓘPaddy-go-Easy Pass occurrences, Cle Elum River, Cle Elum Mining District, Kittitas County, Washington, USA
17.8km (11.1 miles) ⓘSouth Navaho Peak, Swauk Mining District, Kittitas County, Washington, USA
21.7km (13.5 miles) ⓘNegro Creek Iron Mine, Negro Creek, Blewett Mining District (Peshastin Mining District), Chelan 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.
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
 
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