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Ferruginous Quartz
Ferruginous quartz, 9cm, from the Robert mine, Cuyuna Range. Peter Giangrande specimen, ex-Joe Heininger specimen. Jeff Krueger photo.
Product details
Species
Locality
Robert mine, Cuyuna Range
Publications
- Mineralogical Record 56 4 page 118
Added on02/13/2026
Comments
Known provenance
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