 | | Journal (article/letter/editorial) | | andradite, babingtonite, and cronstedtite IN the Weld Range, Western Australia, an Archaean banded iron formation...andradite, and minor babingtonite, magnetite, cronstedtite, stilpnomelane, calcite, epidote, and marcasite...1971). Bundles of optically aligned, fibrous cronstedtite, with dark red-brown to emerald green pleochroism...vein margins. X-ray powder patterns show the cronstedtite to have a 7.08A basal spacing. Minerals in the...Mineral compositions. Clinopyroxenes show a wide range in Fe, Mg, Na, and estimated Fe a+. Diopside, coexisting |  | | Journal (article/letter/editorial) | | 3190/jgeosci.239 Original paper Polytypism of cronstedtite from Chyňava, Czech Republic Jiří HYBLER1*,...author Small druses and isolated crystals of cronstedtite in cavities of a quartz–calcite veinlet were...part. Electron probe microanalysis of selected cronstedtite crystals revealed minor amounts of Cl up to...regardless of the determined polytype. Keywords: cronstedtite, polytypes 2H1, 2H2, 3T, 1T, twinning Received:...F. Laufek 1. Introduction The rare mineral cronstedtite has been first described from the Vojtěch Mine |  | Pignatelli, I., Mugnaioli, E., Hybler, J., Mosser-Ruck, R., Cathelineau, M., Michau, N. (2013) A Multi-Technique Characterization of Cronstedtite Synthesized By Iron–Clay Interaction in a Step-by-Step Cooling Procedure. Clays and Clay Minerals, 61 (4) 277-289 doi:10.1346/ccmn.2013.0610408 | Journal (article/letter/editorial) | | 2013. A MULTI-TECHNIQUE CHARACTERIZATION OF CRONSTEDTITE SYNTHESIZED BY IRON–CLAY INTERACTION IN A STEP-BY-STEP...formed clay minerals observed in run products, cronstedtite was identified by a number of analytical techniques...microscopy, and scanning electron microscopy). Cronstedtite has not previously been recognized to be so...supersaturation of experimental solutions with respect to cronstedtite was due to the availability of Fe and Si in...quartz, and minor amounts of other silicates. Cronstedtite crystals are characterized by various morphologies: |  | | Journal (article/letter/editorial) | | 1127/ejm/2017/0029-2582 PrePub Article 1 Polytypism of cronstedtite from Nižná Slaná, Slovakia 2 JIŘÍ HYBLER1...16 17 18 19 20 21 22 23 24 25 26 Abstract: Cronstedtite, (Fe2þ3x Fe3þx)(Si2xFe3þx)O5(OH)4, was found...Early Palaeozoic rocks of the Gemeric Superunit. Cronstedtite occurs mostly as slim, up to 2.5-mm trigonal...CZ-193 00 Praha 9, Czech Republic Key-words: cronstedtite; 1:1 layer silicate; MDO polytypes 3T; 1M; 2H1;...34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Cronstedtite, with the general formula (Fe2þ3x Fe3þx) (Si2xFe3þx)O5(OH)4 |  | | Journal (article/letter/editorial) | | 227–242 DOI: 10.3190/jgeosci.335 Original paper Cronstedtite from Litošice, Czech Republic Jiří HYBLER1*...Corresponding author The layered iron silicate cronstedtite was encountered in ore veins in the exploration...a polished section of the ore material with cronstedtite bands was prepared, and the mineral association...2H2) polytypes show elevated contents of Mg in the range of 0.19–0.62 apfu and distinctly lower Mn (up to...(up to 0.01 apfu). The BSE images reveal that cronstedtite bands are associated with multiple generations |  | | Journal (article/letter/editorial) | | gradeArchaeanbanded iron-formations,Weld Range,Western Australia MaRUN J. Gore' Department of Geologt...Geologt, University of llestern Australia Nedlands 6009. Australia Abstract There are two basicFe-rich lithologiesat...lithologiesat Weld Range:(l) bandediron-formation containing minnesotaite, siderite, quarlz,magnetite...greenalite analyses,those of greenalite from the Weld Range show a consistent excessof Si and a larger than...greenstone belts of the Yilgarn Block, Western Australia. The Weld Range (Fig. l) is one of the few localities |  | Pignatelli, Isabella, Mosser-Ruck, Régine, Mugnaioli, Enrico, Sterpenich, Jérôme, Gemmi, Mauro (2020) The Effect of the Starting Mineralogical Mixture on the Nature of Fe-Serpentines Obtained during Hydrothermal Synthesis AT 90°C. Clays and Clay Minerals, 68 (4). 394-412 doi:10.1007/s42860-020-00080-y | Journal (article/letter/editorial) | | mineralogical mixture composed of quartz and metal iron, cronstedtite crystallizes. Most of the crystals are 1M polytypes...always associated with both berthierine and cronstedtite. Lepidocrocite was observed only in the experiment...modeling, i.e. the formation of berthierine and cronstedtite in association with magnetite at the expense... . Cronstedtite . Fe-serpentines . Hydrothermal synthesis INTRODUCTION Berthierine, cronstedtite, greenalite...between di- and trioctahedral for most of them. Cronstedtite (Fe2+3–x Fe3+x)(Si2–x Fe3+x)O5(OH)4 is an exception |  | | Journal (article/letter/editorial) | | eudialyte, 421 A TKINS, F. B., see HARRIS, C., 421 AUSTRALIA, Groote Eylandt, todorokite, 253; NEw SOUTH WALES...SOUTH AUSTRALIA, Kapunda, peisleyite, 449; WESTERN AUSTRALIA, Pilbara, babingtonite, 401; Weld Range, banded...India, in Dras ultramafics, 483 Babingtonite, Australia, in Archaean metabasalt, 401; in banded iron-formation...and crystallization, 31; Greenland, 283; Western Australia, in banded ironformation assemblage, 127 COOPER..., 421 CRIDDLE, A. J., see CLARK, A. M., 371 Cronstedtite, in banded iron,formation assemblage, 127 Cuzticite |  | | Journal (article/letter/editorial) | | Geology,Universityof WesternAustralia,Nedlands6009, Australia Abstract Banded iron-formationis a widely di...minor lithology in the Archean Yilgarn Block, Western Australia, occurring in supracrustalsequencescomposed...is not possible with present Yilgarn Block of Western Australia.It occursin sudata. Within most banded...to attempt to posed lithologies, display a wide range in take into accountthe modificationcausedby metametamorphicgrade...bandediron-formations P.O., Wembley,WesternAustralia6014, Australia. sharemany featureswith many other bandediron1954 |  | | Journal (article/letter/editorial) | | containing igneous olivine Fa36–44 , a continuous range in phyllosilicate compositions is associated with...from serpentine toward a magnesian analogue of cronstedtite: (Mg,Fe)2 (Fe3+ )(Fe3+ SiO5 )(OH)4 . Chemographic...and greenalite over acan muchpotentially broader range be thanoccupied the ore serpentine–hisingerite solutions...greenalite, cronstedtite, and minnesotaite reported by Blanc et al. [36], or, in the case of cronstedtite and...question of whether the series represented a genuine range of solid-solution compositions or simply mixtures |  | | Report (volume) | | Australian National University Canberra, ACT, Australia B.W. Evans Dept of Geological Sciences AJ20 University...Washington 98195 Dept of Earth Sciences Case Western Reserve University Cleveland, Ohio 44106 E. Galan...RESIDUAL KAOLIN DEPOSITS 75 76 78 78 Argentina; Australia China; Czechoslovakia; USSR; South Africa MIXED...Democratic Republic; Indonesia KAOLIN DEPOSITS Australia; Brazil Federal Republic of Germany Spain; Suriname...179 181 AMESITE BERTHIERINE ODINITE 182 184 CRONSTEDTITE NI-RICH SPECIES 184 185 186 186 1:1 PHYLLOSILICATES |  | | Report (issue) | | 0-va. 34, 64-65 (1981). Occurrence in Kuramin Range, x-ray data. ACANTHITE. Lewis and Fredericks, (J...(P04)8 (OH)22 . nH20 (rT32), from Moculta, South Australia. Analysis, x-ray data. Orth., a 15.000, b 8.330...analyses (10) from Willyama complex, Broken Hill, Australia. AMPHIBOLE. Cornen, Bull. Mineral. 103, 478-490...Probe analyses (2) from pyroxenite, Victoria, Australia. AMPHIBOLE. Cressey et al., Mineral. Mag. 46,... Probe analyses (16) from iron-formation, W. Australia. AMPHIBOLE. Gole, Can. Mineral. 19, 269-277 (1981) |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Base by Ernest H. Nickel, CSIRO, Wembley, WA, Australia, and Monte C. Nichols published by Aleph Enterprises...N SW, Australia. William D. Birch: Dept. of Mineralogy, Museum of Victoria, Melbourne, Australia. Frank...Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar Raade: Mineralogisk-Geologisk Museum,...structural considerat 6. CRYSTALLOGRAPHY long-range interThe term crystal as used in this volume implies...will consist of a statement of the color or color range associated with each vibration direction, i.e. X |  | | Book (volume) | | minerals contain series of absorption bands in the range from 1,350 to 1,550 cm1 (Fig. 1.1). A cancrinite-group...largely to empirical approaches. The wavenumber range approximately between 400 and 1,700 cm1 is called... in a pronounced doublet 921 + 954 cm1 in the range of Si–O-stretching vibrations (Fig. 1.5). The splitting...consideration of the whole spectral curve within a certain range of frequencies (Dubovitskiy and Chukanov 2004; Chukanov...band of (Ti,Nb)–O-stretching vibrations (in the range 660–700 cm1). This band is single and its position |
|
