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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Pyrite from
Boren Gulch Group, La Plata Mining District (California Mining District), La Plata County, Colorado, USA


Locality type:Mine
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrite data
Locality Data:Click here to view Boren Gulch Group, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1964109
Long-form Identifier:1:3:1964109:4
GUID (UUID V4):0
Nearest other occurrences of Pyrite
0.7km (0.4 miles) Babcock Peak Magnetite Deposit, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
1.9km (1.2 miles) Allard Stock, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
1.9km (1.2 miles) Allard Tunnel Occurrence, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
2.4km (1.5 miles) Copper Hill Mine, La Plata, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
2.6km (1.6 miles) Peerless Mine (MS 9812; Patented Claim: Peerless), La Plata Mining District (California Mining District), Montezuma County, Colorado, USA
2.7km (1.7 miles) Copper Age Mine, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
3.2km (2.0 miles) Mountain Lily Mine, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
3.6km (2.2 miles) Small Hope Mine, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
3.6km (2.2 miles) Camp Bird Prospect, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
3.9km (2.4 miles) Euclid Mine (Eureka-Bulldozer; Unpatented Claims: Euclid Nos. 1-9; Euclid Group), La Plata Mining District (California Mining District), Montezuma County, Colorado, USA
References
Seen on dump pile Jun 19 2026Identified by Ethan Ribble: Visual Identification
 
and/or  
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