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On the mineral composition of slag from the aluminothermic smelting of ferrotitanium. Trudy 2-go Uralskogo petro-graficheskogo soveshchaniya «Petrografiya ogneuporov, shlakov i sinteticheskikh mineralov» [Proceedings of the 2nd Ural petrographic meeting "Petrography of refractories, slags and synthetic minerals"].
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Minerals of the ellestadite group Ca10(SiO4)3 − x(SO4)3 − x(PO4)2x(OH,F,Cl)2 are a spectacular example of these features. In the general case, they are silicate-sulfate-phosphate-hydroxide-chlorides-fluorides. The detailed description of these minerals based on the study of the original collection of pyrometamorphic minerals is presented in ...
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Chlormayenite (after Mayen, Germany), Ca 12 Al 14 O 32 [☐ 4 Cl 2 ], is a rare calcium aluminum oxide mineral of cubic symmetry. It was originally reported from Eifel volcanic complex (Germany) in 1964. It is also found at pyrometamorphic sites such as in the Hatrurim Formation of Israel and in some burned coal dumps.
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Abstract C12−xA7·x(CaF2) (x = 0 ∼ 1.5) minerals were synthesized and their hydration was studied. When x is increased in the C12−xA7·x(CaF2), lattice parameter, a, of the cubic mayenite crystal is decreased and the gravity of this mineral is increased. X significantly influences hydration. C12A7 hydrated and produced thermodynamically is metastable C2AH8 until 28 days. The conversion ...
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New Data on Minerals (2004), 39, 14-19 Tajikistan - northern Tajikistan - Garm region - Tien-Shan mountains - Alai mountin ridge - Darai-Pioz glacier - moraine of the glacier FMM-Moscow
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This list of all articles managed by WikiProject Geology was generated using a list generated by a Wikipedia Release Version tool. It is current as of 17 May 2012. 100,000-year problem. 1575 Valdivia earthquake. 1751 Port-au-Prince earthquake.
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Chlormayenite Chlormayenite (after Mayen, Germany ), Ca 12 Al 14 O 32 [☐ 4 Cl 2 ], is a rare calcium aluminium oxide mineral of cubic symmetry. It was originally reported from Eifel volcanic complex (Germany) in 1964. It is also found at pyrometamorphic sites such as in the Hatrurim Formation of Israel and in some burned coal dumps. [6] [3]
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buried placer burkeite burl Burleigh burley clay burn burn cut burned burned bit burned cut burned lime burn in burning house burning oil burning out burno man burnout burn out Burnside boring machine ... carbonate mineral carbonate of barium carbonate of calcium carbonate of strontium carbonate rock carbonate sand carbonation carbonatite ...
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Das Mineral Chlormayenit ist ein selten vorkommendes Oxid aus der Mayenit-Obergruppe mit der idealisierten chemischen Zusammensetzung Ca 12 Al 14 O 32 Cl 2.Es kristallisiert im kubischen Kristallsystem mit der Struktur der Zementverbindung Ca 12 Al 14 O 33.. Chlormayenit entwickelt nur sehr kleine, farblose Kristalle oder rundliche Körner von unter 0,1 mm Größe. ...
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Oxide mineral Mayenite supergroup: ... [☐ 4 Cl 2], is a rare calcium aluminium oxide mineral of cubic symmetry. It was originally reported from Eifel volcanic complex (Germany) in 1964. It is also found at pyrometamorphic sites such as in the Hatrurim Formation of Israel and in some burned coal dumps. It occurs in thermally altered limestone ...
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since 2010, six minerals related to mayenite and wadalite have been approved: brearleyite ca 12 al 14 o 32 [ 4 cl 2 ] (ima2010-062 (ma et al., 2011)), eltyubyuite ca 12 fe 3+ 10 si 4 o 32 [cl 6 ]...
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The radical oxygen can be generated in the lattice of the new aluminum silicate, Ca12Al14-xSixO33+0.5x, with different Al/Si ratios. The three-dimensional structure of Ca12Al14-xSixO33+0.5x yields positively charged tetrahedral frameworks having molecular size pores occupied by charge-balancing dioxygen species such as O2- and O22-.
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Three minerals of the mayenite supergroup have been found in fluorellestadite-bearing metacarbonate rock (former fragment of petrified wood of ankeritic composition) from the dump at the Baturinskaya-Vostochnaya-1-2 mine.
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Prograde metamorphic sequence of REE minerals in pelitic rocks of the Central Alps: implications for allanite-monazite-xenotime phase relations from 250 to 610 °C. Journal of metamorphic geology, 26(5), pp. 509-526. Oxford: Blackwell Scientific Publications 10.1111/j.1525-1314.2008.00774.x. Alt-Epping, Peter
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The fluoride and carbonate complexes played a significant role in the formation of kasolite. High temperature hydrothermal solutions reacted with pre-existing uranium-bearing metamictized accessory minerals such as pyrochlore, U-rich thorite and zircon to form uranous fluoride complexes. These complexes are predominant in reducing environment ...
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Three minerals of the mayenite supergroup have b een found in fluorellestadite-bearing metacarbonate rock (former fragment of pe trified wood of ankeritic composition) from the dump at the...
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Marokite Supergroup mineral data, information about Marokite Supergroup, its properties and worldwide locations. Dallas Mineral Collecting Symposium - August 20-22 ... Mayenite-supergroup minerals from burned dump of the Chelyabinsk Coal Basin. Russian Geology and Geophysics, 56(11), 1603-1621. Miass
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The bulk CM rocks derived from the low-Al protolith have unusually high (Zn + Cd)/ Al ratios ( 0.2) and, as a result, a mineralogy with negligibly small percentages of Ca aluminates having low Ca: Al molar ratios (minerals of mayenite supergroup, Ca: Al = 6:7) common to most of calcareous CM rocks in the Mottled Zone. Instead, the mineral ...
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Mayenite supergroup, part III: Fluormayenite, Ca 12 Al 14 O 32 [ 4 F 2], and fluorkyuygenite, Ca 12 Al 14 O 32 [(H 2 O) 4 F 2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, South Levant. European Journal of Mineralogy 27(1):123-136, 2015. URL, DOI
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Three minerals of the mayenite supergroup have been found in fluorellestadite-bearing metacarbonate rock (former fragment of petrified wood of ankeritic composition) from the dump at the Baturinskaya-Vostochnaya-1-2 mine.
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As of 2021 there are now IMA-CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams. Physical Properties of Harmunite Hide Colour: Black Hardness: VHN 50 =655 kg/mm 2 - Vickers Density: 4.404 g/cm 3 (Calculated) Chemical Properties of Harmunite Hide Formula: CaFe2O4 Elements listed:
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4+:2O2 analysis is summarized by Gfellar in his review of mayenite as both a synthetic oxide and mineral [44]. [Ca24Al28O64] 4+:2O2 is a highly disordered crystal structure. Synchrotron single-crystal x-ray diffraction (SSXRD) conducted by Palacios et al. and Sakakura et al. revealed that the structure of the cage framework ([Ca24Al28O64]
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SummaryAnhydrous iron, aluminum and fluorine-rich paralavas were found in the burned spoil-heaps of the Chelyabinsk coal basin, Russia. The rocks contain tridymite, anorthite, ferroan. 25 Mayenite supergroup, part II: Chlorkyuygenite from Upper Chegem, Northern Caucasus, Kabardino-Balkaria, Russia, a new microporous mineral with "zeolitic" H2O
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1 6.7229999999999999 30 8 25.2. 3 9 6 1.5. 2 9 6 1.5. 4 1.964 30 9 6.6. 5 1.964 30 6 9.8000000000000007. 6 1.964 30
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A process for preparing an electride compound, comprising (i) providing a precursor compound comprising an oxidic compound of the garnet group; (ii) heating the precursor provided in (i) under plasma forming conditions in a gas atmosphere to a temperature of the precursor above the Hüttig temperature of the precursor, obtaining the electride compound.
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the mayenite supergroup, accepted by the ima-cnmnc (proposal 13-c), is a new mineral supergroup comprising two groups of minerals isostructural with mayenite (space group no. 220, i43d, a ≈ 12 å)...
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Vibrational (Infrared and Raman) Spectra of Minerals and Related Compounds [1st ed. 2020] 978-3-030-26802-2, 978-3-030-26803-9 ... Locality: Burned dump of the Chelyabinsk coal basin, Kopeisk, South Urals, Russia. Description: Yellowish powdery aggregate. A product of the reaction of hot gases from a burning coal dump with excrement from ...
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The mayenite group includes minerals with common formula Ca 12 Al 14 O 32−x (OH) 3x [ W6−3x ], where W = F, Cl, OH, H 2 O and x = 0-2. This distinction in the composition is associated with W site...
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The mayenite group includes minerals with common formula Ca 12 Al 14 O 32−x (OH) 3x [W 6−3x], where W = F, Cl, OH, H 2 O and x = 0-2. This distinction in the composition is associated with W site which may remain unoccupied or be occupied by negatively charged ions: OH −, F −, Cl −, as well as neutral molecules like H 2 O. However, there is no experimental approach to easily detect ...
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About Mayenite Supergroup Hide. Revised in 2013 (IMA 13-C); as a consequence, the mineral brearleyite has been discredited as being the same as chlormayenite; mayenite has been redefined and renamed chlormayenite; kyuygenite has been renamed chlorkyuygenite. The mayenite supergroup species (in general, coded as C12A7, or C12A7e-) show unique ...
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Spectroscopy investigations of mayenite group mineral fluorkyuygenite, with empirical formula (Ca12.09Na0.03)∑12.12(Al13.67Si0.12Fe3+0.07Ti4+0.01)∑12.87O31.96 [F2.02Cl0.02(H2O)3.22(H2S)0.15 0.59]∑6.00, show the presence of an unusual band at 4038 cm−1, registered for the first time and related to molecular hydrogen, apart from usual ...
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The revised composition of Eifel mayenite is best described by the formula Ca12Al14O32-xCl2-x(OH)3x(x ∼0.75); the original formula, Ca12Al14O33, is inadequate. The analysed mineral can be considered to consist of endmember Ca12Al14O32Cl2 (62.5 mol.%) and endmember Ca12Al14O30(OH)6(37.5 mol.%). Keywords
Get priceMayenite supergroup, part III: Fluormayenite, Ca 12 Al 14 O 32 [ 4 F 2], and fluorkyuygenite, Ca 12 Al 14 O 32 [(H 2 O) 4 F 2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, ... Mayenite supergroup, part IV: Crystal structure and Raman investigation of Al-free eltyubyuite from the Shadil-Khokh volcano, Kel' Plateau ...
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Open Ukrainian Citation Index (OUCI) is a search engine and a citation database based on publication metadata from Crossref members. Відкритий український індекс наукового цитування - пошукова система і база даних наукових цитувань, що використовує метадані Crossref.
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This chapter contains data on 2104 Raman spectra of more than 2000 mineral species taken from various periodicals. The data are accompanied by some ... Ludwig T, Nasdala L, Lengauer CL, Tillmanns E, Niedermayr G (2015) Fluor-schorl, a new member of the tourmaline supergroup, and new data on schorl from the cotype localities. Eur J Mineral ...
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21. Kruszewski Ł. Oldhamite-periclase-portlandite-fluorite assemblage and coexisting minerals of burnt dump in Siemianowice Śląskie-Dąbrówka Wielka area (Upper Silesia, Poland) - preliminary report // Mineralogia Polonica Special Papers. 2006. Vol. 28. P. 118-120. 22. Wilson A., Leary J.K.
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Currently only minerals dominated by end-members with x = 0 and the simplified formula X 12T 14O32 [W 6] have been reported. The mayenite group includes four minerals: (1) chlormayenite,...
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Three minerals of the mayenite supergroup have been found in fluorellestadite-bearing metacarbonate rock (former fragment of petrified wood of ankeritic composition) from the dump at the Baturinskaya-Vostochnaya-1-2 mine.
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