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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Tonalite from
Carter Mine (Carter Tunnel), Masonville Mining District, Larimer County, Colorado, USA


Locality type:Mine
Classification
Type:Tonalite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tonalite data
Locality Data:Click here to view Carter Mine (Carter Tunnel), Masonville Mining District, Larimer County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1046512
Long-form Identifier:1:3:1046512:7
GUID (UUID V4):0
Nearest other occurrences of Tonalite
0.3km (0.2 miles) ⓘMason Mine (Mason Ranch Mine), Masonville Mining District, Larimer County, Colorado, USA
0.4km (0.2 miles) ⓘBig Four Mine, Masonville Mining District, Larimer County, Colorado, USA
0.4km (0.2 miles) ⓘYellow Jacket Group (Unpatented Claims: Copper King; Bismark; Yellow Jacket; Gold Dust; Lucky Star; Strang; Bismark Extension), Masonville Mining District, Larimer County, Colorado, USA
0.5km (0.3 miles) ⓘLone Pine Mine (Golden Reward; Morning Star; Hurrah No. 2; Urrah; Golden Glory; Unpatented Claims: Lone Pine), Masonville Mining District, Larimer County, Colorado, USA
1.4km (0.9 miles) ⓘMasonville Mining District, Larimer County, Colorado, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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