hemihedrite

Also known as IMA1967-011

Hemihedrite is a rare lead zinc chromate silicate mineral with formula Pb10Zn(CrO4)6(SiO4)2(F,OH)2. It forms a series with the copper analogue iranite.

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Strunz 8th edition (series ID, updated): VI/E.02
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 7.FC.15
Nickel-Strunz 9th edition (updated 2009): 7.FC.15
Commons category: Hemihedrite
IMA Mineral Symbol: Hhe
chemical formula: ZnPb₁₀(CrO₄)₆(SiO₄)₂(OH)₂

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Discovery and occurrence
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Hemihedrite is a rare lead zinc chromate silicate mineral with formula Pb10Zn(CrO4)6(SiO4)2(F,OH)2. It forms a series with the copper analogue iranite.

==Discovery and occurrence== Hemihedrite was first described in 1967 for occurrences in the Florence lead silver mine in the Ripsey District, Tortilla Mountains, Pinal County, Arizona, US. It was named for the hemihedral morphology of its crystals.