Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Yttrofluorite from
White Cloud pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA


05925190017374686974619.jpg
Yttrofluorite

White Cloud pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
05925190017374686974619.jpg
Yttrofluorite

White Cloud pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
09418470017272022627369.jpg
Yttrofluorite

White Cloud pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
Locality type:Pegmatite
Classification
Species:Fluorite var: Yttrofluorite
Formula:(Ca1-xYx)F2+x where 0.05 < x < 0.3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Gadolinite-(Y)2
Bastnäsite1
Synchysite-(Y)1
Data
Mineral Data:Click here to view Yttrofluorite data
Locality Data:Click here to view White Cloud pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:298277
Long-form Identifier:1:3:298277:9
GUID (UUID V4):0
Nearest other occurrences of Yttrofluorite
4.9km (3.0 miles) ⓘLittle Patsy pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
8.0km (5.0 miles) ⓘSeerie pegmatite (Cooper pegmatite), South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
21.9km (13.6 miles) ⓘSkeleton No. 2 pegmatite, Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
37.1km (23.1 miles) ⓘSnowflake Feldspar Mine, Teller County, Colorado, USA
52.5km (32.6 miles) ⓘStrang pegmatite occurrence (S. B. Strang Ralston Creek pegmatite), Clear Creek Pegmatite Province, Jefferson County, Colorado, USA
73.4km (45.6 miles) ⓘStove Mountain (Cookstove Mountain), El Paso County, Colorado, USA
83.9km (52.2 miles) ⓘ"Cerite" occurrences ("Rusty Gold" locality), Jamestown, Jamestown Mining District, Boulder County, Colorado, USA
References
Meeves, H.; Harrer, C.M.; Salsbury, M.H.; Konselman, A.S; Shannon, S.S. Jnr. (1966) Reconnaissance of beryllium-bearing pegmatite deposits in six western states: Arizona, Colorado, New Mexico, South Dakota, Utah, and Wyoming. Bureau of Mines Information Circular 8298. United States Department of the Interior 34 pp.p.29 - (Table A-1)
Simmons, William B., Heinrich, E. William (1980) Rare-Earth Pegmatites of the South Platte District, Colorado. Resource Series 11, Colorado Geological Survey.
Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
 
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