Huntite
A variety of Minerals
What is Huntite?
Huntite is a carbonate mineral with the chemical formula Mg3Ca(CO3)4. Huntite crystallizes in the trigonal system and typically occurs as platy crystals and powdery masses. The most common industrial use of huntite is as a natural mixture with hydromagnesite as a flame retardant or fire retardant additive for polymers.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Huntite 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.
Huntite Localities Map
See where Huntite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Characteristics of Huntite
Huntite often occurs in combination with other Mg/Ca carbonates such as dolomite, magnesite, and hydromagnesite. Large deposits of huntite occur in Turkey and Greece and these are commercially exploited because of its fire retardant properties. Huntite thermally decomposes over a temperature range of about 450–800 °C, releasing carbon dioxide and leaving a residue of magnesium and calcium oxides.
Quick Facts
Physical Properties
- Color
- White
- Hardness (Mohs)
- 1 - 2
- Density
- 2.87 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- CaMg3(CO3)4
- Elements
- C, Ca, Mg, O
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Huntite FAQs
How do I identify Huntite?
Huntite can be identified by its hardness of 1 - 2 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Huntite?
Huntite typically appears in White. Color can vary depending on impurities and formation conditions.
How hard is Huntite?
Huntite has a hardness of 1 - 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the characteristics of huntite of Huntite?
Huntite often occurs in combination with other Mg/Ca carbonates such as dolomite, magnesite, and hydromagnesite. Large deposits of huntite occur in Turkey and Greece and these are commercially exploited because of its fire retardant properties. Huntite thermally decomposes over a temperature range of about 450–800 °C, releasing carbon dioxide and leaving a residue of magnesium and calcium oxides.
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