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
Cypress Lake Prospect, Cypress Island, Skagit County, Washington, USA


Locality type:Prospect
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 Cypress Lake Prospect, Cypress Island, Skagit County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:308805
Long-form Identifier:1:3:308805:0
GUID (UUID V4):0
Nearest other occurrences of Serpentine Subgroup
0.3km (0.2 miles) ⓘLast Chance Mine, Cypress Island, Skagit County, Washington, USA
0.4km (0.3 miles) ⓘNellie Kellie Prospect, Cypress Island, Skagit County, Washington, USA
0.5km (0.3 miles) ⓘSmith Open Cut, Cypress Island, Skagit County, Washington, USA
0.5km (0.3 miles) ⓘReady Cash Mine, Cypress Island, Skagit County, Washington, USA
2.9km (1.8 miles) ⓘMexican Bay Prospect, Cypress Island, Skagit County, Washington, USA
10.4km (6.5 miles) ⓘStephens Mine, Fidalgo Island, Skagit County, Washington, USA
27.0km (16.8 miles) ⓘAlverson Mine, Fidalgo Island, Skagit County, Washington, USA
39.0km (24.3 miles) ⓘMount Vernon Mine, Skagit County, Washington, USA
42.0km (26.1 miles) ⓘStephens Mine, Skagit County, Washington, USA
45.9km (28.5 miles) ⓘCultus Mountain Nickel Occurrence, Hamilton Mining District, Skagit 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.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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