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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Gneiss from
Hartley Mine, Neihart Mining District (Montana Mining District), Cascade County, Montana, USA


Locality type:Mine
Classification
Type:Gneiss
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gneiss data
Locality Data:Click here to view Hartley Mine, Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:1058289
Long-form Identifier:1:3:1058289:5
GUID (UUID V4):0
Nearest other occurrences of Gneiss
0.3km (0.2 miles) ⓘBoss Mine (Rochester Mine; Atlantus Mine), Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
0.4km (0.3 miles) ⓘMoulton Mine (Compromise), Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
0.9km (0.6 miles) ⓘDacotah Mine (Dakota Mine), Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
0.9km (0.6 miles) ⓘQueen of the Hills Mine (Queen Mine; O'Brien Mine; Galt; Equator; Equator & Great Western), Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
1.1km (0.7 miles) ⓘFlorence Mine (M&I; Florence-Queen), Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
1.5km (0.9 miles) ⓘEvening Star, Star Group, Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
5.1km (3.2 miles) ⓘHegener Occurrence (Baker; Cecelia; Bluebird; Copper Queen; Homestake; Sylvester; Vilipa; Gold Rock; Rock Ford; Anita), Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
5.7km (3.5 miles) ⓘSilver Dyke Mine, Neihart Mining District (Montana Mining District), Cascade County, Montana, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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