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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Tourmaline from
Ruby Mountain, Nathrop, Chaffee County, Colorado, USA


Locality type:Mountain
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Comments:From pegmatites in area
Habit:To 1 inch in diameter
Colour:Black
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Ruby Mountain, Nathrop, Chaffee County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:662914
Long-form Identifier:1:3:662914:4
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
14.2km (8.8 miles) ⓘAce High - Jackpot Prospect, Turret Mining District, Chaffee County, Colorado, USA
16.6km (10.3 miles) ⓘSedalia Mine (Sedalia Copper Mine), Sedalia Mining District, Chaffee County, Colorado, USA
16.8km (10.4 miles) ⓘSilver Rocker group, Turret Mining District, Chaffee County, Colorado, USA
20.9km (13.0 miles) ⓘCalifornia Mine, Upper Browns Creek area, Nathrop, Chaffee County, Colorado, USA
27.8km (17.3 miles) ⓘStockton Mine (Gertrude Vein), Cleora Mining District, Chaffee County, Colorado, USA
29.1km (18.1 miles) ⓘGypse Queen Mine, Cleora Mining District, Chaffee County, Colorado, USA
41.1km (25.5 miles) ⓘUnnamed Uranium - Feldspar Mine (MRDS - 10013132), Saguache County, Colorado, USA
51.3km (31.9 miles) ⓘClimax Mine (Mine No. 8 U.S. Mica Company; Climax Mica Mine), Micanite Mining District (Currant Creek Mining District), Colorado, USA
52.0km (32.3 miles) ⓘChief lithium pegmatite, Texas Creek Area, Fremont County, Colorado, USA
52.2km (32.4 miles) ⓘCotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
References
USGS Bull 1716C
 
and/or  
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