Boussingaultite
A variety of Minerals
What is Boussingaultite?
Boussingaultite is a rare sulfate mineral of the chemical formula: (NH4)2Mg(SO4)2·6(H2O). The formula of boussingaultite is that of Tutton's salts type. It was originally described from geothermal fields in Tuscany, Italy, where it occurs together with its iron analogue mohrite, but is more commonly found on burning coal dumps. The mineral possess monoclinic symmetry and forms clear, often rounded crystals. The mineral is named after the French chemist Jean-Baptiste Boussingault (1802–1887).
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Boussingaultite 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.
Boussingaultite Localities Map
See where Boussingaultite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Colourless, yellowish-pink; colourless in transmitted light.
- Hardness (Mohs)
- 2
- Density
- 1.722 g/cm³
Chemical Properties
- Chemical Formula
- (NH4)2Mg(SO4)2 · 6H2O
- Elements
- H, Mg, N, O, S
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Boussingaultite FAQs
How do I identify Boussingaultite?
Boussingaultite can be identified by its hardness of 2 on the Mohs scale, Colourless color. Look for these key characteristics when examining specimens.
What color is Boussingaultite?
Boussingaultite typically appears in Colourless, yellowish-pink; colourless in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Boussingaultite?
Boussingaultite has a hardness of 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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