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View All Minerals; View by Alphabetical Order ; Varieties and Other Names; Mineral Search; Cronstedtite. Individual member mineral of the Serpentine group with a chemical formula of Fe 2+ 2 Fe 3+ 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. It is a trigonal-ditrigonal pyramidal mineral containing hydrogen, iron, oxygen, and silicon.

Cronstedtite mineral data

Cronstedtite Formula (Fe 2+,Fe 3+) 3 (Si,Fe 3+) 2 O 5 (OH) 4 Crystal System Trigonal Crystal Habit Pyramidal, Divergent, Amorphous Cleavage Perfect, None, None Luster Vitreous - Resinous Color brownish black, greenish black, dark brown, black Streak dark olive green Class Trigonal - Ditrigonal Pyramidal Hardness 3.5 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.It is a trigonal-ditrigonal pyramidal mineral containing hydrogen, iron, oxygen, and silicon. Data / Mineral. Home; Search.

Magnesium 7.51 % Mg 12.45 % MgO. Manganese 25.45 % Mn 32.86 % MnO. Aluminum 8.33 % Al 15.74 % Al 2 O 3. Silicon 13.01 % Si 27.83 % SiO 2. Hydrogen 1.24 % H 11.13 % H 2 O. Oxygen 44.46 % O. Complete Information Guide to Rocks, Minerals, & Gemstones .

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It is a rare occurrence to have such a rich coverage of cronstedtite, and this specimen displays very well. This is a classic Mineral Data: Click here to view Cronstedtite data: Locality Data: Click here to view Maribo meteorite, Lolland, Zealand Region, Denmark .

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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). Cronstedtite-2H2 mineral data, information about Cronstedtite-2H2, its properties and worldwide locations. Cronstedtite. Individual member mineral of the Serpentine group with a chemical formula of Fe 2+ 2 Fe 3+ (SiFe 3+)O 5 (OH) 4. Back Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure : Cronstedtite: Hybler J : European Journal of Mineralogy 18 (2006) 197-205: Parallel intergrowths in cronstedtite-1T: determination of the degree of disorder: Locality: Lostwithiel, England: Sample: LOS: Note Black crystals of cronstedtite on matrix.
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Almost all rocks are made of minerals. The exceptions are obsidian (which is made of volcanic glass) and HudBay Minerals News: This is the News-site for the company HudBay Minerals on Markets Insider © 2021 Insider Inc. and finanzen.net GmbH (Imprint). All rights reserved. Registration on or use of this site constitutes acceptance of our Terms Monterey Minerals News: This is the News-site for the company Monterey Minerals on Markets Insider © 2021 Insider Inc. and finanzen.net GmbH (Imprint). All rights reserved.

Cronstedtite is a major constituent of CM chondrites, a carbonaceous chondrite group exhibiting varying degrees of aqueous alteration.
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This very rich and showy little specimen is festooned with lustrous, black, trigonal crystals to 3 mm on a 3-dimensional crust of matrix. It is a rare occurrence to have such a rich coverage of cronstedtite, and this specimen displays very well. This is a classic Mineral Data: Click here to view Cronstedtite data: Locality Data: Click here to view Maribo meteorite, Lolland, Zealand Region, Denmark . Mineral and/or Locality . Molecular Weight = 323.85 gm.

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Smrčok, L'., Ďurovič, S., Petříček, V. and Weiss, Z. - Refinement of the crystal structure of Complete Information Guide to Rocks, Minerals, & Gemstones . Minerals. Minerals & Varieties. View All Minerals; View by Alphabetical Order ; Varieties and Other Names; Mineral Search; Cronstedtite.

Cronstedtite - Black micro crystals in a 2mm group. Confirmed. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.