$175Median
511Sold (12 mo)
$250Last sale
Pyrite
Help improve this record
No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.
A grouping of sharp cubic pyrite crystals with no points of attachment. These are completely replaced with lustrous brown goethite. In perfect condition all around. The specimen comes with a previous label from the collection of Ray DeMark, he collected the piece on April 26, 2003.Goethite after pyrite is a pseudomorph where the original iron sulfide mineral is chemically altered and replaced by iron oxyhydroxide. Throughout this oxidation process, the crystal preserves the sharp cubic, pyritohedral, or octahedral geometry of the precursor pyrite, while its metallic brass-yellow luster transforms into a rich brown, yellowish-brown, or blackish-brown earthy finish. These specimens are highly valued by collectors for maintaining pristine crystal habits despite complete mineralogical replacement.
Current owner
Unknown Owner
- Acquired
- Oct 2026
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Comments