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Formula: Cu6Fe3As4S12
Sulpharsenite
Crystal System: Trigonal
Specific gravity: 4.77 calculated
Hardness: 4
Luminescence: No fluorescence observed under UV
Environments
Zhengminghuaite is a new mineral, approved in 2022 and to date (September 2024) reported only from the
type locality.
Localities
At the type locality, the Zimudang Mine, Xingren County, Qianxinan, Guizhou, China, zhengminghuaite is found
in the gold deposit as irregular, commonly fractured grains of several to a
few tens of microns in the brecciated
gold ores and is paragenetically associated with the late ore-stage mineral
assemblage, including realgar,
orpiment, pyrite,
chalcopyrite,
arsenopyrite, aktashite,
christite, quartz and
calcite.
Paragenetic relationships indicate that zhengminghuaite and associated
mercury and tellurium
sulphosalts precipitated in response to the increase in sulphidation state and decrease in temperature of the
late-ore stage hydrothermal fluid
(AM 109.7.1220-1227).
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