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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Phlogopite from
Del Norte Thunder Egg beds, Saguache County, Colorado, USA


Locality type:Beds
Classification
Species:Phlogopite
Formula:KMg3(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Phlogopite data
Locality Data:Click here to view Del Norte Thunder Egg beds, Saguache County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:228236
Long-form Identifier:1:3:228236:7
GUID (UUID V4):0
Nearest other occurrences of Phlogopite
72.8km (45.2 miles) ⓘThorium Prospects (MRDS - 10087971), White Earth Mining District (Powderhorn Mining District), Gunnison County, Colorado, USA
76.2km (47.3 miles) ⓘIron Hill deposit, White Earth Mining District (Powderhorn Mining District), Gunnison County, Colorado, USA
78.1km (48.6 miles) ⓘThorium Prospects (MRDS - 10014575), White Earth Mining District (Powderhorn Mining District), Gunnison County, Colorado, USA
86.4km (53.7 miles) ⓘCinderella, Chaffee County, Colorado, USA
87.2km (54.2 miles) ⓘWest Point, Tomichi Mining District (White Pine Mining District), Gunnison County, Colorado, USA
95.1km (59.1 miles) ⓘCotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
95.9km (59.6 miles) ⓘNiles Mine, Gem Park complex, Custer County, Colorado, USA
97.0km (60.3 miles) ⓘVermiculite Mine (MRDS - 10013422), Gem Park complex, Fremont County, Colorado, USA
97.5km (60.6 miles) ⓘGem Mine, Gem Park complex, Fremont County, Colorado, USA
References
Rocks & Minerals (July-August, 2002)
 
and/or  
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