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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Fossil Specimens (commodity) from
Petrified Forest, Calistoga area, Sonoma County, California, USA


Locality type:Forest
Classification
Commodity:Fossil Specimens (commodity)
Data
Commodity Data:Click here to view Fossil Specimens (commodity) data
Locality Data:Click here to view Petrified Forest, Calistoga area, Sonoma County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1424737
Long-form Identifier:1:3:1424737:0
GUID (UUID V4):0
 
and/or  
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