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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Coffinite from
Runge Mine, Edgemont Uranium Mining District, Fall River County, South Dakota, USA


Locality type:Mine
Classification
Species:Coffinite
Formula:U(SiO4) · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Coffinite data
Locality Data:Click here to view Runge Mine, Edgemont Uranium Mining District, Fall River County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:214635
Long-form Identifier:1:3:214635:5
GUID (UUID V4):0
Nearest other occurrences of Coffinite
90.3km (56.1 miles) ⓘCrow Butte uranium deposit, Dawes County, Nebraska, USA
References
USGS Bull 1063D
USGS Bull 1063E
Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology
 
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