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Formula: KFe3+8(PO4)6(OH)7.6.5H2O
Hydrated phosphate containing hydroxyl
Crystal System: Monoclinic
Specific gravity: 2.96 measured 2.86 calculated
Hardness: 3
Streak: Pale yellowish white
Colour: Yellowish brown, cream to white, pale to canary yellow
Luminescence: Not fluorescent under UV
Environments
Pegmatites
Hydrothermal environments
Meurigite-K is a late-stage mineral, rare at all localities (HOM).
Localities
At the Wycheproof granite quarry, Buloke Shire, Victoria, Australia,
meurigite-K is associated with rockbridgeite,
cyrilovite
and leucophosphite
(HOM).
At Hagendorf, Germany, meurigite-K is formed by alteration of
triphylite in a
granite pegmatite,
associated with nontronite,
rockbridgeite, apatite,
vivianite, strengite,
beraunite, robertsite -
mitridatite, cyrilovite,
laueite and stewartite
(HOM).
At the Gold Quarry mine, Nevada, USA, meurigite-K occurs in the oxidized zone of a low-temperature sediment-hosted
hydrothermal
gold deposit, associated with fluellite,
kingite, tinticite,
leucophosphite, strengite/
variscite, hewettite,
tyuyamunite and torbernite
(HOM).
At the type locality, the Chino Mine, Grant county, New Mexico, USA, meurigite-K occurs in the oxide zone of a
copper deposit, associated with
beraunite,
dufrénite, hematite and
leucophosphite
(Mindat, R&M 84.6.499).
At the Santa Rita mine, New Mexico, USA, meurigite-K occurs along a fault gouge in the oxidised zone of a
copper sulfide deposit, associated with
dufrénite, beraunite,
leucophosphite and hematite
(HOM).
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