Kalungaite

kalungaite

bohdanowiczite

guanjuatite

stibiopalladinite

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Formula: PdAsSe
Selenide of palladium and arsenic, cobaltite group
Specific gravity: 7.59 calculated
Hardness: 4 to 5
Streak: Black
Colour: Lead-grey
Common impurities: Sb,Bi,S
Environments

Metamorphic environments
Hydrothermal environments

Kalungaite was approved in 2004, but to date (June 2022) it has been reported only from the type locality.

Localities

At the type locality, the Buraco do Ouro mine, Cavalcante, Goiás, Brazil, kalungaite occurs in a quartz-muscovite mylonite, related to an aluminium-rich granite, in platy anhedral aggregates along foliation planes. Associated ore minerals are gold, chalcopyrite, bohdanowiczite, an unnamed lead-bismuth-selenium-sulphur mineral, clausthalite, guanajuatite, stibiopalladinite, sperrylite and padmaite. Gangue minerals are muscovite, quartz and rare tourmaline and magnetite.
Kalungaite is interpreted as having formed from hydrothermal fluids of granitic origin, during emplacement shearing and alteration, producing an unusual gold-platinum-group element deposit (MM 70.1.123–130.).

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