Crystal chemistry and hydrogen bonding of rustumite Ca10(Si2O7)2(SiO4)(OH)2Cl2 with variable OH, Cl, F

Gfeller, Frank; Armbruster, Thomas; Galuskin, Evgeny V.; Galuskina, Irina O.; Lazić, Biljana; Savelyeva, V. B.; Zadov, Aleksandr E.; Dzierżanowski, Piotr; Газеев, В.М.

doi:10.2138/am.2013.4257

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…Ideally, the anion site is (OH) 2 Cl 2 . Two of our three samples and the sample of Gfeller et al (2013) rustumite associated with cuspidine. Our sample raises the possibility that "fluor-rustumite" does exist.…”

Section: Rustumite Ca 10 (Si 2 O 7 ) 2 (Sio 4 )(Oh) 2 CLmentioning

confidence: 91%

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The Mineralogy of Skarns of the Spurrite–merwinite Subfacies, Sanidinite Facies, Güneyce–ikizdere Area, Eastern Black Sea, Turkey

Taner¹,

Martin²,

Gault³

2013

Can Mineral

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Rare high-temperature and low-pressure contact-metamorphic assemblages are known to occur in the Güneyce-Ikizdere area, eastern Black Sea, Turkey. The emplacement of plutonic rocks of the calc-alkaline Rize batholith has caused the development of assemblages belonging to the spurrite-merwinite subfacies of the sanidinite facies. We provide compositional data for spurrite, rustumite, hillebrandite, tilleyite, cuspidine, vesuvianite, monticellite and gehlenite, and the secondary calc-silicates foshagite, dellaite, killalaite, bicchulite, hydroxylellestadite and two mineral species first discovered in these skarns, defernite and trabzonite. Our data point to the possible existence of a fluorine-rich variant of rustumite and a hydroxyl-dominant variant of cuspidine. These minerals are associated with familiar skarn minerals. The temperatures achieved are considered to be in the range 800-850°C on the basis of published phase-equilibrium results. The unusually high temperatures of contact metamorphism next to compositionally intermediate magmas may well reflect the presence of an underplating of basic magma in the vicinity and the efficient transfer of heat by the rising fluid phase. The relatively high concentrations of Cl and F encountered in these skarn assemblages are consistent with hydrothermal activity leading to Kuroko-type mineralization in this orogenic setting.

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Section: Rustumite Ca 10 (Si 2 O 7 ) 2 (Sio 4 )(Oh) 2 CLmentioning

confidence: 91%

“…The structure of three crystals, of which one is from Güneyce-Ikizdere, was refined by Gfeller et al (2013). Data on the composition of rustumite are reported in Table 3.…”

Section: Rustumite Ca 10 (Si 2 O 7 ) 2 (Sio 4 )(Oh) 2 CLmentioning

confidence: 99%

The Mineralogy of Skarns of the Spurrite–merwinite Subfacies, Sanidinite Facies, Güneyce–ikizdere Area, Eastern Black Sea, Turkey

Taner¹,

Martin²,

Gault³

2013

Can Mineral

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“…The BVS for (1) and (2) are 1.74 and 2.38, respectively. The zig-zag arrangement seems more likely as the corresponding BVS are 1.84 and 2.28 for the environments (3) and (4).…”

Section: Crystal Structure Of Rusinovitementioning

confidence: 98%

“…Rusinovite, Ca 10 (Si 2 O 7 ) 3 Cl 2 , was found in 2011 in an altered carbonate-silicate xenolith from the Upper Chegem Caldera located in Kabardino-Balkaria, Northern Caucasus, Russia. These rocks are formed at high-temperature and low-pressure conditions ( [1][2][3]. Besides their natural occurrence, rusinovite-type synthetic phases were also described from anthropogenic formations.…”

Section: Introductionmentioning

confidence: 99%

New Occurrence of Rusinovite, Ca10(Si2O7)3Cl2: Composition, Structure and Raman Data of Rusinovite from Shadil-Khokh Volcano, South Ossetia and Bellerberg Volcano, Germany

et al. 2018

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Rusinovite, Ca10(Si2O7)3Cl2, was found at two new localities, including Shadil-Khokh volcano, South Ossetia and Bellerberg volcano, Caspar quarry, Germany. At both of these localities, rusinovite occurs in altered carbonate-silicate xenoliths embedded in volcanic rocks. The occurrence of this mineral is connected to specific zones of the xenolith characterized by a defined Ca:Si < 2 ratio. Chemical compositions, as well as the Raman spectra of the investigated rusinovite samples, correspond to the data from the locality of rusinovite holotype—Upper Chegem Caldera, Northern Caucasus, Russia. The most intense bands of the Raman spectra are related to vibrations of (Si2O7) groups. Unit cell parameters of rusinovite from South Ossetia are: a = 3.76330(4) Å, b = 16.9423(3) Å, c = 17.3325(2) Å, V = 1105.10(4) Å3, Z = 2. The performed synchrotron radiation diffraction experiments did not confirm a doubling of c as reported for the synthetic phase, Ca10(Si2O7)3Cl2. However, one-dimensional diffuse scattering parallel to b* has been observed. This can be interpreted with an ordered arrangement of Si2O7 groups creating layers with a doubled a parameter. Consequently, the two different displacements of neighbouring layers allow random stacking faults to occur.

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Raman Spectra of Minerals

Чуканов

Вигасина

2019

Vibrational (Infrared and Raman) Spectra of Minerals and Related Compounds

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Crystal chemistry and hydrogen bonding of rustumite Ca10(Si2O7)2(SiO4)(OH)2Cl2 with variable OH, Cl, F

Cited by 4 publications

References 14 publications

The Mineralogy of Skarns of the Spurrite–merwinite Subfacies, Sanidinite Facies, Güneyce–ikizdere Area, Eastern Black Sea, Turkey

The Mineralogy of Skarns of the Spurrite–merwinite Subfacies, Sanidinite Facies, Güneyce–ikizdere Area, Eastern Black Sea, Turkey

New Occurrence of Rusinovite, Ca10(Si2O7)3Cl2: Composition, Structure and Raman Data of Rusinovite from Shadil-Khokh Volcano, South Ossetia and Bellerberg Volcano, Germany

Raman Spectra of Minerals

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