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I recieved two fine specimens of cronstedtite and I am thinking, that they came from Salsigne. Thanks for help Pavel. 24th Oct 2009 16:51 UTC Uwe Kolitsch 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 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.

Sawed backside. Type Locality. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals. Cronstedtite - The face of this specimen is covered with jet black, highly lustrous, tiny (less than 0.5mm) Cronstedtite crystals associated with tiny discoidal Siderite crystals with inclusions of possible Boulangerite.

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

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Photo added to mindat.org “ Groupe crystals black Mindat 手册 Group of black crystals of cronstedtite-3T resting on siderite crystals. Cronstedtite was confirmed by PXRD, SXRD and EMPA-WDS.

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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.

Fe2Fe2SiO5(OH)4 URL: http://www.mindat.org/min-7105.html. 172416. Ransom ED.15 Cronstedtite Fe++2Fe+++(SiFe+++)O5(OH)4.
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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. Excellent old specimen. Sawed backside.

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). It has been found in Bohemia in the Czech Republic and in Cornwall, England. Photo added to mindat.org “ Group of black prismatic crystals of cronstedtite with pyrite and minor siderite crystals.
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Excellent old specimen. Sawed backside. Type Locality. .

http://www.mindat.org/min-872.html. mindat.org (Ralph and Chau, 2012) and webmineral.com. (Barthelmy Amesite, Antigorite, Berthierine, Brindleyite, Caryopilite, Chrysotile, Cronstedtite,. Dickite Brian Kosnar's Mindat Home Page. My Page, My Photos. Opal · South Wollo Zone, Amhara Mindat conference in Madgascar · More like this · Fraipontite, (Zn,Al)3(Si,Al)2O5( OH)4 , on Olivenite, Hilarion Mine, Kamariza area, Lavrion, Greece.
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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.

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Mindat locality: Salsigne mine, Salsigne, Carcassonne, Aude, Occitanie, France × Previous Next Photos. Events.

3rd Jan 2010 21:23 UTC Rob Woodside Cronstedtite Specimen ID: UHE-DL7. Mineral(s) Cronstedtite: Fe 2+ 2 Fe 3+ ((Si,Fe 3+) 2 O 5)(OH) 4. Locality. Mindat locality: Salsigne mine, Salsigne, Cronstedtite is a complex iron silicate mineral belonging to the serpentine group of minerals.