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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Chromite from
Arapahoe meteorite, Cheyenne County, Colorado, USA


Locality type:Meteorite Fall Location
Classification
Species:Chromite
Formula:Fe2+Cr23+O4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chromite data
Locality Data:Click here to view Arapahoe meteorite, Cheyenne County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1105383
Long-form Identifier:1:3:1105383:1
GUID (UUID V4):0
Nearest other occurrences of Chromite
49.2km (30.6 miles) ⓘRush Creek meteorite, Kiowa County, Colorado, USA
53.2km (33.1 miles) ⓘLadder Creek meteorite, Greeley County, Kansas, USA
61.8km (38.4 miles) ⓘHorace meteorite, Greeley County, Kansas, USA
76.5km (47.6 miles) ⓘGoodland meteorite, Sherman County, Kansas, USA
References
Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025
 
and/or  
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