$1,000Median
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Glaucodot specimens for sale
4 for sale · $150–$3,500 USD
5 in the gallery
Glaucodot is a cobalt iron arsenide mineral that forms metallic, prismatic to elongated crystals and compact masses. It commonly exhibits a lead-gray to steel-gray color with a bright to metallic luster, and it can occur in tabular to striated habit. In salient localities, crystals from Sweden and Argentina are among the most sought after by collectors for their sharp faces and well-formed terminations. Fine specimens may display associated minerals such as arsenides and sulfosalts, which can enhance the overall contrast and display on a specimen.
- Formula
- (Co,Fe)AsS
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Sulfide, arsenopyrite/marcasite group
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 5
- Specific gravity
- 5.95–6.16
- Luster
- metallic
- Transparency
- opaque
- Color
- white, gray
- Streak
- gray, black
- Cleavage
- distinct
- Fracture
- uneven
- Crystal habit
- prismatic, tabular, granular, massive
Buy Glaucodot specimens
View all 4Where Glaucodot is found
Top localities
- Tunaberg1 specimen
About Glaucodot
Collectors seek glaucodot for its metallic shine, its association with cobalt-iron arsenide suites, and the appeal of mineral specimens from classic European and South American locales. While it often occurs in compact masses rather than large crystals, well-trimmed displays with clean faces reveal a high-quality sheen and geometric geometry that make it a rewarding mineral to study and display. Its localities contribute to its story as part of historic mining districts and modern collections alike.
