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Sphalerite, the more common polymorph of zinc sulfide Wurtzite, the less common polymorph of zinc sulfide. ZnS exists in two main crystalline forms. This dualism is an example of polymorphism. In each form, the coordination geometry at Zn and S is tetrahedral. The more stable cubic form is known also as zinc blende or sphalerite.
Gemmy, colorless to pale green sphalerite from Franklin, New Jersey (see Franklin Furnace), are highly fluorescent orange and/or blue under longwave ultraviolet light and are known as cleiophane, an almost pure ZnS variety. [23] Cleiophane contains less than 0.1% of iron in the sphalerite crystal structure. [12]
A category for compounds with a crystal structural identical to cubic zinc sulfide. This is also known as the sphalerite structure or the Structurbericht designation B3. Pages in category "Zincblende crystal structure"
Wurtzite is a zinc and iron sulfide mineral with the chemical formula (Zn,Fe)S, a less frequently encountered structural polymorph form of sphalerite. The iron content is variable up to eight percent. [5] It is trimorphous with matraite and sphalerite. [2] It occurs in hydrothermal deposits associated with sphalerite, pyrite, chalcopyrite ...
Zinc sulfide, ZnS, crystallizes in two closely related structures, the zincblende crystal structure and the Wurtzite crystal structure, which are common structures of compounds with the formula MA. Both Zn and S are tetrahedrally coordinated by the other ion. A useful property of ZnS is its phosphorescence.
Sphalerite, which is a form of zinc sulfide, is the most heavily mined zinc-containing ore because its concentrate contains 60–62% zinc. [14] No significant deposits of cadmium-containing ores are known. Greenockite (CdS), the only cadmium mineral of importance, is nearly always associated with sphalerite (ZnS). This association is caused by ...
The city’s hated new congestion toll could dangerously delay FDNY response times — meaning the “difference between life and death,” unions repping thousands of Bravest warned Sunday. The ...
For the ores Cu 2 S and ZnS , balanced equations for the roasting are: 2 Cu 2 S + 3 O 2 → 2 Cu 2 O + 2 SO 2 2 ZnS + 3 O 2 → 2 ZnO + 2 SO 2. The gaseous product of sulfide roasting, sulfur dioxide (SO 2) is often used to produce sulfuric acid. Many sulfide minerals contain other components such as arsenic that are released into the environment.
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