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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Orthoclase from
Block P Mine, Hughesville, Barker Mining District, Judith Basin County, Montana, USA


Locality type:Mine
Classification
Species:Orthoclase
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Orthoclase data
Locality Data:Click here to view Block P Mine, Hughesville, Barker Mining District, Judith Basin County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:145144
Long-form Identifier:1:3:145144:3
GUID (UUID V4):0
Nearest other occurrences of Orthoclase
42.6km (26.4 miles) ⓘHighwood Mountains, Chouteau County, Montana, USA
References
Rocks & Min.: 14: 111.
 
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