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


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Monarch Mine, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1984622
Long-form Identifier:1:3:1984622:8
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.4km (0.3 miles) ⓘYellow Eye, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
0.5km (0.3 miles) ⓘMay Rose Mine (Yuletide), La Plata Mining District (California Mining District), La Plata County, Colorado, USA
1.4km (0.8 miles) ⓘComstock Mine, Parrott City, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
1.4km (0.9 miles) ⓘGraves, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
1.6km (1.0 miles) ⓘSouthern Boy Mine, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
1.7km (1.1 miles) ⓘLucky Four Mine (Delphic; MS 19336), La Plata Mining District (California Mining District), La Plata County, Colorado, USA
1.8km (1.1 miles) ⓘIncas Mine, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
2.0km (1.2 miles) ⓘEsmerelda (Esmerelda Tunnel), La Plata Mining District (California Mining District), La Plata County, Colorado, USA
2.2km (1.3 miles) ⓘCopper Hill Mine, La Plata, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
2.4km (1.5 miles) ⓘLady Eleanora Mine (Butterfly), La Plata Mining District (California Mining District), La Plata County, Colorado, USA
References
Examination of dump materialIdentified by Ethan Ribble: Visual Identification
 
and/or  
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