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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Amazonite from
Cotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA


Locality type:Mine
Classification
Species:Microcline var: Amazonite
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Amazonite data
Locality Data:Click here to view Cotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:355201
Long-form Identifier:1:3:355201:8
GUID (UUID V4):0
Nearest other occurrences of Amazonite
0.2km (0.2 miles) ⓘMine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
72.5km (45.0 miles) ⓘFlorissant Area, Florissant (Topaz Butte), Teller County, Colorado, USA
73.0km (45.3 miles) ⓘLake George, Park County, Colorado, USA
74.1km (46.0 miles) ⓘpegmatite (1), Lake George (Badger Flats) Area, Park County, Colorado, USA
74.7km (46.4 miles) ⓘQuartz Hill, Lake George, Park County, Colorado, USA
76.6km (47.6 miles) ⓘPikes Peak, El Paso County, Colorado, USA
76.6km (47.6 miles) ⓘLake George ring complex, Pikes Peak batholith, Teller County, Colorado, USA
77.1km (47.9 miles) ⓘCrystal Peak, Teller County, Colorado, USA
77.4km (48.1 miles) ⓘGlen Cove, Pikes Peak batholith, Teller County, Colorado, USA
78.1km (48.6 miles) ⓘRay Ziegler pegmatite pocket, Crystal Peak, Teller County, Colorado, USA
References
Am Min 50:1179-1212
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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