description Hemimorphite Overview
Hemimorphite is a hydrated zinc silicate mineral with the chemical formula Zn4Si2O7(OH)2·H2O. It forms mainly in the oxidized zones of zinc ore deposits and can occur as white, colorless, blue, green, or brown crystals and crusts. Its name refers to hemimorphic crystals, whose differently shaped ends reflect the mineral's polar crystal structure. Blue and blue-green material is sometimes cut as a cabochon or collected as a mineral specimen.
help Hemimorphite FAQ
What is the chemical formula of hemimorphite?
Hemimorphite has the chemical formula Zn4Si2O7(OH)2·H2O. It is a hydrated zinc silicate mineral.
What colors can hemimorphite be?
Hemimorphite can occur as white or colorless material and may also be blue, green, or brown. It commonly appears as crystals, crusts, or botryoidal aggregates.
Where does hemimorphite form?
It forms mainly in the oxidized zones of zinc ore deposits. These are near-surface parts of ore bodies where circulating oxygen-rich water alters primary minerals.
Why is hemimorphite called hemimorphite?
The name refers to hemimorphic crystals, whose two ends have different forms. This crystal habit is a defining mineralogical feature of the species.
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