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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Ludwigite from
Read Mine, Allen Clay Property, Springdale Mining District, Stevens County, Washington, USA


Locality type:Mine
Classification
Species:Ludwigite
Formula:Mg2Fe3+(BO3)O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ludwigite data
Locality Data:Click here to view Read Mine, Allen Clay Property, Springdale Mining District, Stevens County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:103303
Long-form Identifier:1:3:103303:8
GUID (UUID V4):0
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.pages 48,72,75
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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