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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Marcasite from
Onyx Ace Hill Quarry (Ace Hill Quarry), Plattsmouth, Cass County, Nebraska, USA


Locality type:Quarry
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Onyx Ace Hill Quarry (Ace Hill Quarry), Plattsmouth, Cass County, Nebraska, USA
Data Identifiers
Mindat Occurrence Record ID:154815
Long-form Identifier:1:3:154815:0
GUID (UUID V4):0
Nearest other occurrences of Marcasite
9.8km (6.1 miles) ⓘQueen Hill Quarry, Plattsmouth, Cass County, Nebraska, USA
51.7km (32.2 miles) ⓘFort Calhoun Stone Quarry, Fort Calhoun, Washington County, Nebraska, USA
78.0km (48.4 miles) ⓘYankee Hill Brick Yard (Burnham pit), Lincoln, Lancaster County, Nebraska, USA
References
 
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