Ferruginous Quartz - image 1

Ferruginous Quartz

P

Peter Giangrande
0 for sale
Ferruginous quartz, 9cm, from the Robert mine, Cuyuna Range. Peter Giangrande specimen, ex-Joe Heininger specimen. Jeff Krueger photo.

Product details

Species
QuartzAbout Quartz →
Added on02/13/2026
Locality
USA, Minnesota
Publications
  • Mineralogical Record 56 4 page 118

Known provenance

DateCollectorAcquisition price
—Joe HeiningerNot disclosed

Learn more

Quartz
Mineral guide
Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.
Regional guide
Quartz from Minnesota
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