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jarosite

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jarosite [ˈdʒærəˌsaɪt]
n
(Earth Sciences / Minerals) a yellow to brown secondary mineral consisting of basic hydrated sulphate of iron and potassium in masses or hexagonal crystals. Formula: KFe3(SO4)2(OH)6
[from Barranco Jaroso, in Almeria, Spain + -ite1]


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In many cases, the water not only remained liquid at extremely low temperatures, but precipitated minerals as it got colder, including jarosite, haematite and gypsum, which are all present on Mars today.
It is lithologically represented by brownish, brownish-gray clays with jarosite tarnish and inter-layers of gray, fine-grained sandstones, and by marlaceous and sideritic concretions.
FROST, GROSS, HYDROSTAT, INTROSPECT, JAROSITE, KEROSENE, LEPROSY, MOROSE, NEUROSIS, OLOROSO, PROSAIC, QUATROS.
 
 
 
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