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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Anthophyllite from
Amethyst Prospect, Custer County, Colorado, USA


Locality type:Prospect
Classification
Species:Anthophyllite
Formula:◻Mg2Mg5(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Anthophyllite data
Locality Data:Click here to view Amethyst Prospect, Custer County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:430492
Long-form Identifier:1:3:430492:0
GUID (UUID V4):0
Nearest other occurrences of Anthophyllite
2.7km (1.6 miles) ⓘMarion Mine, Custer County, Colorado, USA
48.6km (30.2 miles) ⓘRussell, Trinchera Range, Costilla County, Colorado, USA
50.3km (31.3 miles) ⓘDawson Gold project, Fremont County, Colorado, USA
51.2km (31.8 miles) ⓘHorseshoe Mine (School Section Deposit), Grape Creek Mining District (Greenhorn Mining District), Fremont County, Colorado, USA
51.6km (32.0 miles) ⓘEl Plomo Mine, Grape Creek Mining District (Greenhorn Mining District), Fremont County, Colorado, USA
51.6km (32.0 miles) ⓘGreen Mountain Mine (Copper Boy Mine), Grape Creek Mining District (Greenhorn Mining District), Fremont County, Colorado, USA
69.6km (43.3 miles) ⓘCotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
91.7km (57.0 miles) ⓘMill Gulch Mine, Guffey Mining District, Park County, Colorado, USA
95.3km (59.2 miles) ⓘCopper King Mine (Copper Queen Mine), Guffey Mining District, Park County, Colorado, USA
95.7km (59.4 miles) ⓘBetty Mine (Lone Chimney Mine; Betty Lowe), Guffey Mining District, Park County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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