How do I identify Chvaleticeite?

Chvaleticeite can be identified by its hardness of 1.5 on the Mohs scale, white color. Look for these key characteristics when examining specimens.

What color is Chvaleticeite?

Chvaleticeite typically appears in white, pinkish, yellowish-green. Color can vary depending on impurities and formation conditions.

How hard is Chvaleticeite?

Chvaleticeite has a hardness of 1.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

Chvaleticeite

A variety of Minerals

What is Chvaleticeite?

Chvaleticeite is a monoclinic hexahydrite manganese magnesium sulfate mineral with formula: (Mn, Mg)[SO4]·6(H2O). It occurs in the oxidized zone of manganese silicate deposits with pyrite and rhodochrosite that have undergone regional and contact metamorphism. It is defined as the manganese dominant member of the hexahydrite group. Chvaleticeite is named after the city Chvaletice, Bohemia, in the Czech Republic. Chvaleticeite and minerals like it have been studied for their hydrogen bonding and incongruent melting properties as they are predicted to form in the relative environments of Mars and other bodies in the solar system.

Chvaleticeite Market Value Calculator

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Chvaleticeite Localities Map

See where Chvaleticeite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

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North ZoneCentral RidgeSouth Basin

Key Characteristics

Formation of Chvaleticeite

Chvaleticeite was discovered in a sulfate paragenesis in the oxidation zone of the Upper Proterozoic volcanogenic massive sulfide ore deposit of pyrite-manganese ores at Chvaletice. It was found in association with melanterite (it can form by partial dehydration), Mg-jokouite, Mg-ilesite, rozenite, copiapite and gypsum. This paragenesis allows heptahydrates and tetrahydrates to dominate over pentahydrates and hexahydrates. Chvaleticeite is completely soluble in water.

Composition of Chvaleticeite

Chvaleticeite has an empirical formula of (Mn, Mg)[SO4]·6(H2O) and is a member of the hexahydrite group with the space group C2/c. Chemical analysis was carried out using classical chemical methods. Sulfate was determined gravimetrically, MnO was determined using titration, MgO was determined by EDTA titration and CaO, Fe2O3, K2O and Na2O using AAS. The H2O was determined by the modified Penfield method. The performed analysis produced the following result: MnO 15.81, MgO 6.41, CaO 0.04, FeO traces, Fe2O3 0.10, Al2O3 traces, K2O 0.005, Na2O 0.011, SO3 31.48, P2O5 traces, H2O+ 0.37, H2O- 45.22, insoluble residue 0.36, sum 99.81 weight percent.