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Formula: (H3O)(UO2)(AsO4).3H2O
Hydrated normal arsenate, uranyl
mineral,
meta-autunite group
Specific gravity: 3.3 to 3.55
Hardness: 2 to 3
Streak: White to pale yellow
Colour: Lemon-yellow to deep yellow
Solubility: Soluble in acids
RADIOACTIVE
Environments
Trögerite is a rare secondary mineral in the oxidation
zone of some uranium
deposits, usually found as crusts or aggregates of microscopic crystals.
Zeunerite crystals commonly
occur overgrowing trögerite in a parallel position
(Mindat, HOM).
Localities
At the type locality, the Walpurgis Flacher vein, Weißer Hirsch Mine (shaft 3), Neustädtel, Schneeberg,
Erzgebirgskreis, Saxony, Germany,
trögerite occurs in the oxidised zone of a
silver - nickel -
arsenic - uranium<.a<
deposit.
Associated minerals include
walpurgite, uranospinite,
uranospathite,
asselbornite,
zeunerite, uranosphaerite,
erythrite and cobaltoan
manganese oxides
(Mindat, Dana, HOM, AM 38.1159-1168).
Trögerite from the Walpurgis Flacher vein -
Image
At the Bota-Burum uranium deposit, Alakol, Almaty Region, Kazakhstan, trögerite occurs with
realgar, orpiment,
scorodite, mansfieldite,
natrouranospinite,
arseniosiderite,
metatorbernite,
metazeunerite,
uranophane, arsenopyrite,
pyrite and galena
(HOM).
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