Zinkosite
Zinkosite is a sulfate mineral with the chemical formula zinc sulfate. It belongs to the orthorhombic crystal system and is classified in the Strunz system as 7.AB.10 and in the Dana system as 71.2.2b.10. This mineral is relatively soft, with a Mohs hardness of 2 to 2.5, and has a low to moderate density. It exhibits a vitreous to pearly luster and is typically white, colorless, or pale yellow in color. Zinkosite is a member of the sulfate mineral group and is known for its hygroscopic nature, meaning it can absorb moisture from the air.
Composition
- ZnZinc40.5%
- OOxygen39.6%
- SSulfur19.9%
Overview
Zinkosite is a sulfate mineral with the chemical formula zinc sulfate. It belongs to the orthorhombic crystal system and is classified in the Strunz system as 7.AB.10 and in the Dana system as 71.2.2b.10. This mineral is relatively soft, with a Mohs hardness of 2 to 2.5, and has a low to moderate density. It exhibits a vitreous to pearly luster and is typically white, colorless, or pale yellow in color. Zinkosite is a member of the sulfate mineral group and is known for its hygroscopic nature, meaning it can absorb moisture from the air.
Etymology
Zinkosite is named after the element zinc, which is a key component of its chemical composition. The mineral's name reflects its zinc content and is derived from the German word 'Zink' for the metal.
How to recognize it
Zinkosite can be identified by its low hardness, typically 2 to 2.5 on the Mohs scale, and its white or pale yellow color. It has a vitreous to pearly luster and a white streak. The mineral is often recognized by its hygroscopic nature, which causes it to absorb moisture from the air. It can be confused with other soft sulfate minerals, but its low hardness and characteristic color help distinguish it.
Indicative prices
Zinkosite is not typically used in jewelry or as a gemstone, so it has no established price range in the gem market. As a mineral specimen, its value is generally low, with small to medium crystals or aggregates fetching between EUR 5 and EUR 50 depending on origin, clarity, and presentation. Prices vary by source and are rarely traded at high value due to its rarity and softness.