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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Kaolinite from
Hicks Dome, Hicks, Hardin County, Illinois, USA


Locality type:Dome
Classification
Species:Kaolinite
Formula:Al2(Si2O5)(OH)4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Kaolinite data
Locality Data:Click here to view Hicks Dome, Hicks, Hardin County, Illinois, USA
Data Identifiers
Mindat Occurrence Record ID:1947689
Long-form Identifier:1:3:1947689:8
GUID (UUID V4):0
Nearest other occurrences of Kaolinite
14.8km (9.2 miles) ⓘLuella Mine, Pope County, Illinois, USA
17.0km (10.6 miles) ⓘPittsburg Mine (Clay Diggings Mine), Lusk Creek Mining Sub-District, Pope County, Illinois, USA
19.1km (11.9 miles) ⓘCave-in-Rock, Cave-In-Rock Mining Sub-District, Hardin County, Illinois, USA
25.5km (15.9 miles) ⓘGivens Prospect (Corn Mines), Crittenden County, Kentucky, USA
28.7km (17.9 miles) ⓘColumbia mine, Marion, Crittenden County, Kentucky, USA
35.0km (21.8 miles) ⓘHutson Zinc mine, Salem, Livingston County, Kentucky, USA
41.7km (25.9 miles) ⓘBlue Mine (Blue and Marble mine), Crittenden County, Kentucky, USA
41.8km (26.0 miles) ⓘMarble Group, Tabb Mining Subdistrict, Crittenden County, Kentucky, USA
74.7km (46.4 miles) ⓘOlmsted, Pulaski County, Illinois, USA
86.6km (53.8 miles) ⓘJackson Purchase Ball Clay Region (Holly Springs Clay), Jackson Purchase, Graves County, Kentucky, USA
References
McIntosh, Julia A.; Andersen, Allen K.; Bennett, Mitchell M.; Thompson, Jay M.; Johnson, Craig A.; Hofstra, Albert H.; Nuelle, Laurence M. (2026) Geochemical, mineralogical, and isotopic evidence for multi-stage genesis of the Hicks Dome REE + Y-HFSE-fluorite deposit, Illinois, USA. Ore Geology Reviews, 194. p.107328. doi:10.1016/j.oregeorev.2026.107328
 
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