Aurorite
A variety of Minerals
What is Aurorite?
Aurorite is a dark-colored mineral with the chemical formula (Mn,Ag,Ca)Mn3O7·3H2O. It is named for its type locality, the North Aurora mine in White Pine County, Nevada.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Aurorite 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.
Aurorite Localities Map
See where Aurorite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Black, pale brown in transmitted light at the edges of very thin, platy grains
- Hardness (Mohs)
- 2 - 3
- Density
- 3.81 g/cm³
Chemical Properties
- Chemical Formula
- Mn2+Mn4+3O7 · 3H2O
- Elements
- H, Mn, O
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Aurorite FAQs
How do I identify Aurorite?
Aurorite can be identified by its hardness of 2 - 3 on the Mohs scale, Black color. Look for these key characteristics when examining specimens.
What color is Aurorite?
Aurorite typically appears in Black, pale brown in transmitted light at the edges of very thin, platy grains. Color can vary depending on impurities and formation conditions.
How hard is Aurorite?
Aurorite has a hardness of 2 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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