Huntite
Encyclopedia
Huntite is a carbonate mineral with the chemical formula Mg3Ca(CO3)4.
It often occurs in combination with hydromagnesite
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It thermally decomposes over a temperature range of about 450–800 °C, releasing carbon dioxide and leaving a residue of magnesium oxide and calcium oxide.
as a fire retardant additive for polymers. These types of mixtures are used as alternatives to the more commonly used aluminium hydroxide
.
It often occurs in combination with hydromagnesite
Hydromagnesite
Hydromagnesite is a hydrated magnesium carbonate mineral with the formula: Mg542.4H2O.It generally occurs associated with the weathering products of magnesium containing minerals such as serpentine or brucite. It occurs as incrustations and vein or fracture fillings in ultramafic rocks and...
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It thermally decomposes over a temperature range of about 450–800 °C, releasing carbon dioxide and leaving a residue of magnesium oxide and calcium oxide.
Uses
Its most common industrial use is as a mixture with hydromagnesiteHydromagnesite
Hydromagnesite is a hydrated magnesium carbonate mineral with the formula: Mg542.4H2O.It generally occurs associated with the weathering products of magnesium containing minerals such as serpentine or brucite. It occurs as incrustations and vein or fracture fillings in ultramafic rocks and...
as a fire retardant additive for polymers. These types of mixtures are used as alternatives to the more commonly used aluminium hydroxide
Aluminium hydroxide
Aluminium hydroxide, Al3, ATH, sometimes erroneously called Hydrate of alumina, is found in nature as the mineral gibbsite and its three, much more rare forms, polymorphs: bayerite, doyleite and nordstrandite. Closely related are aluminium oxide hydroxide, AlO, and aluminium oxide, Al2O3,...
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