Zincovoltaite
Zincovoltaite is a rare hydrated sulfate mineral with the chemical formula K2Zn5Fe^3⁺3Al(SO4)12 * 18H2O. It crystallizes in the cubic crystal system and belongs to the sulfate mineral class, specifically within the vontaite group. This mineral is notable for its complex chemical composition, which includes potassium, zinc, iron in the +3 oxidation state, aluminum, and sulfate ions, all bound with a large number of water molecules. It is typically colorless or pale in hue, with a vitreous luster and a relatively low hardness. Its classification in the Strunz system as 7.CC.25 and in the Dana system as 29.9.1.2 reflects its sulfate-based structure and composition.
Overview
Zincovoltaite is a rare hydrated sulfate mineral with the chemical formula K2Zn5Fe^3⁺3Al(SO4)12 * 18H2O. It crystallizes in the cubic crystal system and belongs to the sulfate mineral class, specifically within the vontaite group. This mineral is notable for its complex chemical composition, which includes potassium, zinc, iron in the +3 oxidation state, aluminum, and sulfate ions, all bound with a large number of water molecules. It is typically colorless or pale in hue, with a vitreous luster and a relatively low hardness. Its classification in the Strunz system as 7.CC.25 and in the Dana system as 29.9.1.2 reflects its sulfate-based structure and composition.
Etymology
Zincovoltaite is named after the element zinc, which is a key component of its chemical composition. The IMA approved the name for this mineral, but no specific discovery year is provided in the facts.
How to recognize it
Zincovoltaite can be identified by its cubic crystal system and its relatively low hardness, though the exact Mohs hardness value is not provided. It typically appears colorless or pale and exhibits a vitreous luster. Its streak is likely white or colorless, and its density is not specified. Due to its rarity and specific chemical composition, it is unlikely to be confused with more common minerals, though its sulfate-based nature may lead to comparisons with other sulfate minerals.
Trivia
Zincovoltaite is notable for its cubic crystal system, which is relatively uncommon for sulfate minerals. Its chemical formula includes a high number of water molecules, making it highly hydrated. The mineral's name is directly derived from the presence of zinc, highlighting its unique composition among sulfate minerals.