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Dark-brown crystals form an aggregate partially covered by Fe-oxides microcrystals. Specimen size: 16 - Mineral and Gemstone Kingdom 17 - Mineralienatlas (Deutsch) 18 - NSDL Reciprocal Net (JAVA) 19 - Online Mineral Museum 20 - Philatelic Mineralogy 21 - QUT Mineral Atlas 22 - Ruff.Info 23 - Scandinavian mineral gallery 24 - WWW-MINCRYST 25 - YupRocks. Search for Galena using: Define cronstedtite. cronstedtite synonyms, A mineral consisting principally of silicate of iron, geography, and other reference data is for informational purposes only.

Cronstedtite mineral data

Data consultation. Aqueous Cronstedtite is stable at low temperature in A generalized model for predicting the thermodynamic properties of clay minerals. Cronstedtite - Black micro crystals in a 2mm group. Confirmed. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.

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It was discovered in 1821 and named in honor of Swedish mineralogist Axel Fredrik Cronstedt (1722–1765). It has been found in Bohemia in the Czech Republic and in Cornwall, England. Cronstedtite is a major constituent of CM chondrites, a carbonaceous chondrite group exhibiting varying degrees of aqueous alteration. Cronstedtite.

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Sep 13, 2016 - Cronstedtite, Fe++2Fe+++(SiFe+++)O5(OH)4 , Herja Mine, Chiuzbaia, Baia Mare, Maramureș Co., Romania. Collected from Herja mining area in the early '50s.

Headings include crystallography, chemical composition, physical and optical properties, as well as an alphabetical listing of mineral species 16 - Mineral and Gemstone Kingdom 17 - Mineralienatlas (Deutsch) 18 - NSDL Reciprocal Net (JAVA) 19 - Online Mineral Museum 20 - Philatelic Mineralogy 21 - QUT Mineral Atlas 22 - Ruff.Info 23 - Scandinavian mineral gallery 24 - WWW-MINCRYST 25 - YupRocks. Search for Galena using: English: Cronstedtite Locality: Herja Mine (Kisbánya), Baia Mare (Nagybánya), Maramures County, Romania (Locality at mindat.org) A rich crust covered with sharp, lustrous , fat crystals to 2-3 mm in size, makes this a very fine miniature of this classic rarity (a complex iron silicate with multiple oxidation states of iron in the same crystal). Fingerprint Dive into the research topics of 'Formation of brucite and cronstedtite-bearing mineral assemblages on Ceres'.
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Such specimens are very Cronstedtite is a complex iron silicate mineral belonging to the serpentine group of minerals. Its chemical formula is Fe 2+ 2 Fe 3+ (Si,Fe 3+ O 5)(OH) 4. It was discovered in 1821 and named in honor of Swedish mineralogist Axel Fredrik Cronstedt (1722–1765). It has been found in Bohemia in the Czech Republic and in Cornwall, England.

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A very aesthetic and very rare large cabinet size specimen of transparent, long axes quartz crystals with very lustrous crystal faces, overgrowth by small spherulites and hemispheres of black cronstedtite.size . Cronstedtite is a complex iron silicate mineral belonging to the serpentine group of minerals. It has a formula of Fe 2+ 2 Fe 3+ (Si,Fe 3+ O 5 )(OH) 4 .