Huemulite
A variety of Minerals
What is Huemulite?
Huemulite is a mineral with formula Na4Mg(V10O28)·24H2O that is yellow to orange in color. It was first discovered in Argentina in 1959 and described in 1966. The mineral is named for the Huemul mine in which it was discovered.
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Key Characteristics
Composition of Huemulite
Huemulite exhibits the triclinic crystal system with space group P1 and one formula unit per unit cell. The crystal structure consists of decavanadate anions (V10O28) linked by an interstitial complex of isolated [Mg(H2O)6] and an infinite zigzag chain of [Na4(H2O)14]. There are a further four isolated H2O groups, two of which are positionally disordered.
Quick Facts
Physical Properties
- Color
- Yellowish orange to orange
- Hardness (Mohs)
- 2.5 - 3
- Density
- 2.404 g/cm³
- Streak
- Yellow
Chemical Properties
- Chemical Formula
- Na4Mg(V10O28) · 24H2O
- Elements
- H, Mg, Na, O, V
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