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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Marcasite from
Summitville Mine, Summitville, Rio Grande County, Colorado, USA


Locality type:Pit
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Summitville Mine, Summitville, Rio Grande County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1077277
Long-form Identifier:1:3:1077277:1
GUID (UUID V4):0
Nearest other occurrences of Marcasite
9.2km (5.7 miles) ⓘVera Breccia Pipe Occurrence, Platoro Mining District (Ute Mining District), Conejos County, Colorado, USA
9.3km (5.8 miles) ⓘValley Queen Mine (Platoro Tunnel; Ajax Nos. 1-10; Texas; Snowstorm; Platoro Tunnel Site; Valley King; Valley Queen Group; Patented Claims: Valley Queen; Shasta), Platoro Mining District (Ute Mining District), Conejos County, Colorado, USA
9.8km (6.1 miles) ⓘForest King Mine (Forest King Group; Ophir; MS 6342; Bonanza King; MS 6342), Platoro Mining District (Ute Mining District), Conejos County, Colorado, USA
9.8km (6.1 miles) ⓘParole Mine (Parole Group; Patented Claims: Parole; MS 6606; Parole No. 2; MS 6606), Platoro Mining District (Ute Mining District), Conejos County, Colorado, USA
10.1km (6.3 miles) ⓘMammoth Revenue Mine (Mammoth Mine), Platoro Mining District (Ute Mining District), Conejos County, Colorado, USA
13.2km (8.2 miles) ⓘLake View Claim (April Queen; MS 18859; Claims: Lake View; Queen Bee; MS 18859), Platoro Mining District (Ute Mining District), Conejos County, Colorado, USA
16.4km (10.2 miles) ⓘDee Stock Occurrence, Platoro Mining District (Ute Mining District), Conejos County, Colorado, USA
57.2km (35.5 miles) ⓘBulldog Mountain Mine, Creede Mining District, Mineral County, Colorado, USA
82.1km (51.0 miles) ⓘSt. Jacob Mine (Griggs; MS 2426; Patented Claims: Hamilton; MS 2425; St. Jacob Group; St. Johns; MS 2427; St. Jacobs; MS 2428), Carson Mining District, Hinsdale County, Colorado, USA
82.9km (51.5 miles) ⓘBachelor Mine, Carson Mining District, Hinsdale County, Colorado, USA
References
Gray, et al (1993)
 
and/or  
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