Erlichmanite
A variety of Pyrite Group
What is Erlichmanite?
Erlichmanite is the naturally occurring mineral form of osmium sulfide (OsS2). It is grey with a metallic luster, hardness around 5, and specific gravity about 9. It is found in noble metal placer deposits. Named for Jozef Erlichman, electron microprobe analyst at the NASA Ames Research Center.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Erlichmanite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Erlichmanite Localities Map
See where Erlichmanite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Gray
- Hardness (Mohs)
- 4.5 - 5.5
- Density
- 9.59 g/cm³
Chemical Properties
- Chemical Formula
- OsS2
- Elements
- Os, S
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Erlichmanite FAQs
How do I identify Erlichmanite?
Erlichmanite can be identified by its hardness of 4.5 - 5.5 on the Mohs scale, Gray color. Look for these key characteristics when examining specimens.
What color is Erlichmanite?
Erlichmanite typically appears in Gray. Color can vary depending on impurities and formation conditions.
How hard is Erlichmanite?
Erlichmanite has a hardness of 4.5 - 5.5 on the Mohs scale. This gives it moderate hardness.
