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Formula: PdAsSe
Selenide, palladium- and
arsenic- bearing mineral,
cobaltite group
Crystal System: Isometric
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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