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Formula: Al2(H2O)(OH)4.n(Cl,OH-,H2O)
Chloride
Crystal System: Isometric
Specific gravity: 1.66 measured
Colour: Yellow
Solubility: Weakly hygroscopic.
Environments
Localities
At the Maria Mine, Caleta Vítor mining district, Arica Province, Arica y Parinacota, Chile, minerals related to
cadwaladerite also found at this location are tondiite,
atacamite, paratacamite and
anhydrite
(CM 57.827-841).
Cadwaladerite from the Maria Mine -
Image
The type Locality, Cerros Pintados, Tamarugal Province, Tarapacá, Chile, is an inactive epithermal hot spring
deposit fed by SO4-rich waters; it is also the type locality for
pickeringite and tamarugite.
Samples collected in 2015 were associated with halite,
anhydrite and jarosite.
The type sample of cadwaladerite from Cerros Pintados is lemon-yellow and transparent to translucent,
occurring within masses of colourless granular and columnar halite crystals
(CM 57.827-841).
Gewerkschaft Deutschland Mine, Oelsnitz, Erzgebirgskreis, Saxony, Germany, Marcel mine heap, Radlin,
Wodzisław County, Silesian Voivodeship, Poland and Kladno mine, Libušin, Kladno District, Central Bohemian
Region, Czech Republic. Cadwaladerite (previously called lesukite) has also been identified from burning
coal seams in Germany, Poland and the Czech Republic
(CM 57.827-841).
Cadwaladerite from the Gewerkschaft Deutschland
Mine - Image
At the Khaidarkan Sb-Hg deposit, Kadamjay District, Batken Region, Kyrgyzstan, cadwaladerite has been found
(CM 57.827-841).
At the Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia, mineral grains
are found as accumulations in hot (50–300oC) ash and lava within zones of metasomatic transformation.
Cadwaladerite (previously lesukite) is associated with
meniaylovite,
chlorartinite, pauflerite,
sofiite and halite
(CM 57.827-841).
Cadwaladerite from Tolbachic -
Image
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