Mindat - suche nach: Cronstedtite Webmineral - suche nach:Cronstedtite Handbook-of-Mineralogy - suche nach: Cronstedtite RRUFF - Raman, XRD and other mineral data - suche nach: Cronstedtite RRUFF - References and PDF downloads - suche nach: Cronstedtite American-Mineralogist-Crystal-Structure-Database - suche nach: Cronstedtite Athena - suche

Cronstedtite is not a common mineral but it is not extremely rare and Mindat lists 37 localities (2010). It was recognized as a species since about 1890. By far the best locality for specimens appears to be the Herja mine in Romania.

Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español. Print or Cut-and-Paste your Greenalite Specimen Label here : Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español. Print or Cut-and-Paste your Kellyite Specimen Label here : Cronstedtite is a silicate mineral with the composition Fe 3 (SiFe)O 5 (OH) 4. The sample at left is about 12 cm across and is from Herja, Crisana-Maramures, Romania. This sample is described as cronstedtite with siderite . Cronstedtite - Awesome specimen with old labels and numbers to match the specimen to labels. The face is covered with black, lustrous trigonal crystals with rounded triangular terminations and prismatic forms.

Cronstedtite mindat

Events. Photo added to mindat.org “ black crystals of Cronstedtite dimension area mm. 4 x 4 photo Germano Fretti collection Luigi Chiappino ” Luigi Chiappino - 26th September Photo added to mindat.org “ group of elongated prismatic crystals of cronstedtite area size 5.0 mm Photo Enrico Bonacina (OLYMPUS DIGITAL CAMERA) Collection Domenico Preite ” Domenico Preite - … 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).

Liens externes.

by roxana lara. Excellent sphere of Cronstedtite, with small sphere of Marcasite , Locality: Spain Minerals And. Saved from mindat.org. Cronstedtite, Marcasite

Print or Cut-and-Paste your Kellyite Specimen Label here : English: Cronstedtite Locality: Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia (Locality at mindat.org) Size: 3.4 x 2.3 x 0.7 cm. Cronstedtite is a rare iron silicate of the serpentine group. Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español. Print or Cut-and-Paste your Pecoraite Specimen Label here : Cronstedtite: | | | Cronstedtite | | | | ||| World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español.

Utilisation. Notes et références. Voir aussi. Liens externes. (en) « Manandonite », sur Mindat.org (consulté le 23 décembre 2018). Portail des minéraux et roches.

Print or Cut-and-Paste your Antigorite Specimen Label here : La cronstedtita és un mineral de la classe dels silicats que pertany al grup de la caolinita-serpentina.Va ser anomenada en honor de Axel Fredrik Cronstedt (1722-1765), químic i mineralogista suec que va descobrir el níquel, la scheelita i va establir el terme zeolita.. Característiques. La cronstedtita és un silicat de fórmula química (Fe 2 2+ Fe 3+)(Si,Fe 3+) 2 O 5 (OH) 4. cronstedtite cron"stedt*ite (krŏn"stĕt*īt), n. (Min.) A mineral consisting principally of silicate of iron, and crystallizing in hexagonal prisms with perfect basal cleavage; -- so … Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español. Print or Cut-and-Paste your Caryopilite Specimen Label here : Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite.In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass.

Media in category "Cronstedtite" The following 10 files are in this category, out of 10 total. 71.01.02c.07 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 3 1 m 3m : Strunz Class: 09.ED.15 09 - SILICATES (Germanates) 09.E - Phyllosilicates Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español. 71.01.02c.07 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 3 1 m 3m : Strunz Class: 09.ED.15 09 - SILICATES (Germanates) 09.E - Phyllosilicates Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español. Cronstedtite - Awesome specimen with old labels and numbers to match the specimen to labels.
Göteborgs universitet hundar

Příbram, Central Bohemia Region, Bohemia ( Böhmen; Boehmen), Czech Republic. Mineral Data. Fe2+2Fe3+((Si,Fe3+)2O5)( OH)4.

3rd Jan 2010 20:16 UTC Emil Box. Cronstedtite is trigonal instead of hexagonal. Milo. 3rd Jan 2010 21:23 UTC Rob Woodside Named for Axel Fredrik Cronstedt, Swedish mineralogist and chemist. Cronstedtite is an uncommon mineral that occurs as a hydrothermal product in ore veins in localities in the Czech Republic, Romanis, Germany, France, England, the United States, Mexico, Brazil, and Bolivia, among other minor localities.
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Cronstedtite is a major constituent of CM chondrites, a carbonaceous chondrite group exhibiting varying degrees of aqueous alteration. Cronstedtite abundance decreases with increasing alteration.

Print or Cut-and-Paste your Chrysotile Specimen Label here : 71.01.02c.07 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 3 1 m 3m : Strunz Class: 09.ED.15 09 - SILICATES (Germanates) 09.E - Phyllosilicates Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español. Media in category "Cronstedtite" The following 10 files are in this category, out of 10 total. 71.01.02c.07 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 3 1 m 3m : Strunz Class: 09.ED.15 09 - SILICATES (Germanates) 09.E - Phyllosilicates Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español.

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Photo added to mindat.org “ black crystals of Cronstedtite dimension area mm. 4 x 4 photo Germano Fretti collection Luigi Chiappino ” Luigi Chiappino - 26th September 2013

It is a rare occurrence to have such a rich coverage of cronstedtite, and this specimen displays very well. This is a classic Cronstedtite-1M mineral data, information about Cronstedtite-1M, its properties and worldwide locations. SUPPORT US . Covid-19 has significantly affected our fundraising. IMA Status: Valid Species (Pre-IMA) 1821.