Ameghinite
A variety of Minerals

What is Ameghinite?
Ameghinite, Na[H4B3O7] or NaB3O3(OH)4, is a mineral found in Argentina. It is a soft mineral with a Mohs hardness of 2-3. Ameghinite has a monoclinic crystal system. It was first described in 1967 for an occurrence in the Tincalayu Mine, Salar Del Hombre Muerto, Salta, Argentina. It was named for Argentine geologist brothers, Carlos Ameghino (1865–1936) and Florentino Ameghino (1854–1911).
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ameghinite 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.
Ameghinite Localities Map
See where Ameghinite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Colourless
- Hardness (Mohs)
- 2 - 3
Chemical Properties
- Chemical Formula
- Na(H4B3O7)
- Elements
- B, H, Na, O

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Ameghinite FAQs
How do I identify Ameghinite?
Ameghinite can be identified by its hardness of 2 - 3 on the Mohs scale, Colourless color. Look for these key characteristics when examining specimens.
What color is Ameghinite?
Ameghinite typically appears in Colourless. Color can vary depending on impurities and formation conditions.
How hard is Ameghinite?
Ameghinite 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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