Carbonatites of the world, explored deposits of Nb and REE

Information on carbonatite deposits containing niobium and rare earth elements from around the world with grade and tonnage models, geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.

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carbonatite.kml (uncompressed, 94k bytes)
carbonatite.kmz (compressed, 5k bytes)

Show in your GIS using OGC WMS:

http://mrdata.usgs.gov/services/carbonatite?request=GetCapabilities&service=WMS&version=1.1.1

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Get the entire data set: carbonatite.zip (44 kb zipped shapefile expands to 386 kb)
carbonatite-csv.zip (44 kb zipped comma-delimited text expands to 161 kb)

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Publication:

USGS Open-File Report 2009-1139: Carbonatites of the world, explored deposits of Nb and REE--database and grade and tonnage models
http://pubs.usgs.gov/of/2009/1139/

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