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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Tourmaline from
Unnamed Occurrence (ARDF - PM093; east of Sapsuk Lake), Aleutians East Borough, Alaska, USA


Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Unnamed Occurrence (ARDF - PM093; east of Sapsuk Lake), Aleutians East Borough, Alaska, USA
Data Identifiers
Mindat Occurrence Record ID:593825
Long-form Identifier:1:3:593825:4
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
13.3km (8.3 miles) ⓘFour Bear; PMRGX-28 Prospect, Aleutians East Borough, Alaska, USA
References
(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey
 
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