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Last Updated: 02 September 2022

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New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. VI. Melanarsite, K 3 Cu 7 Fe 3+ O 4 (AsO 4 ) 4

Abstract of the New mineral melanarsite, K 3 Cu 7 Fe 3+ O 4 4, was discovered in the sublimates of the Arsenatnaya fumarole of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka Peninsula, Russia, in the second scoria cone of the Northern Breakthrough. Melanarsite occurs as tabular to prismatic crystals up to 0. 4 mm, separated or mixed in clusters up to 1 mm across or in interrupted crusts up to 0. 02 cm in thickness over basalt scoria. Melanarsite is brittle, and it is brittle. Mohs' toughness is u223c4 and the mean VHN is 203 kg mm, u20132. UC20133 g cm D calc is 4. 39 g cm u20133. In reflected light, melanarsite is a dark grey. K 2 O 10. 70, CaO 0. 03, CuO 45. 11, ZnO 0. 24, Al 2 O 3 0. 32, Fe 2 O 3 0. 11, TiO 2 0. 12, Po 2 O 5 0. 07, total 99. 56, As 2 O 5 36. 86, CaO 0. 05, CaO 0. 13, CuO 45. 11, ZnO 0. 05, ZnO 0. 53, Al 2 O 3 0. 10, P 2 O 5 0. 20, TiO 5 0. 26 O 5 O 2 O 2 O 5 O 5 0. 05, CaO 45. , CuO 45. 1, ZnO 45. The empirical method, based on 20 O apfu's 20, is u22112. 82 -u22118. 11 u22113. 98 O 20. B = 11. 4763, b = 105. 078, u00b0, y = 106. 03u00b0, c = 10. 1322, u00b0;u00c5 3 and Z = 4. 05 million, c = 10. 1322, c = 10. 1322, u00c5 3. 01 (b) 10. 4306, c = 105. 078. 068, 0 = 050. 003 u00b0, au00b0, 6662760, u00c5u00b0, u00b0, u00c5u00c5 tu00b2u00b0, 0. 056 0, u00b0, b0, u00b0, b0, u00b0, u00b2u00b0, u00b0, 0, u00c5, u00b0, u00c5u00b0 9. 22, 7. 59, 2. 863, and 2. 473 are the best reflections of the powder X-ray diffraction pattern [ d, u00c5] d's. The largest reflections of the powder X-ray diffraction pattern [ d, u00c5] are 9. 22, 7. 59, 4. 8, 2. 763, 2. 370, and 2. 473. Melanarsite has a unique structure form. Two crystallographically independent K+ cations are found in the tunnels and voids of the pseudo-framework centring eight- and seven-fold polyhedra.

Source link: https://doi.org/10.1180/minmag.2016.080.027


Efflorescent Sulphates with M+ and M2+ Cations from Fumarole and Active Geothermal Fields of Mutnovsky Volcano (Kamchatka, Russia)

Sulphate efflorescent minerals covering the surface of the Mutnovsky volcano's Donnoe and Dachnoe fields are described in this study. Ammonia species were primarily isolated around fumaroles. The mineral assemblage portrayed herein is unique in comparison to other geological locations and reveals the development of low-temperature mineral formation associated with volcanism. H, Na, K, NH4, Ca, Mg, Fe2+, Fe3+, and Al are all represented in different amounts in standardized waters, ranging from 2. 4 to 6. 5, and acidic waters' dominance. The gas condensate has a pH of 5. 5, and Mg, and comes in the form of +, Ca, and Mg. At the Mutnovsky volcano, the unique geochemistry of thermal water is represented by the Ti, Co. , and Ni impurities. We believe that the chemical composition of alunite-supergroup minerals reflects the typical hydrothermal properties of hydrothermal eruptions and provides valuable information on the hydrothermal process.

Source link: https://doi.org/10.3390/min12050600


New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. III. Popovite, Cu 5 O 2 (AsO 4 ) 2

Abstract of the Second scoria cone of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia, is a new mineral popovite, Cu5O 2 2, was discovered in the sublimates of the Arsenatna fumarole's Second scoria cone. Granular or tabular crystals and as grains up to 0. 2 mm in size, forming clusters of 0. 2 mm in diameter and as crusts on basalt scoria or aphthitalite incrustations, are present in popovite. CuO 6 octahedra with excellent Jahn-Teller deterioration, as well as CuO 5 and CuO 5 polyhedra are among the layer's components. The Russian mineralogists Vladimir Anatol'evich Popov and Valentina Ivanovna Popova, a husband and wife research team from the Institute of Mineralogy of the Russian Academy of Sciences, Miass, Russia, are named in honor of Vladimir Anatol'evich Popov and Valentina Ivanovna Popova, a Russian mineralogists who worked in the Institute of Mineralogy, Miass, Russia, Miass.

Source link: https://doi.org/10.1180/minmag.2015.079.1.11


Mapping metabolic activity at single cell resolution in intact volcanic fumarole sediment

This research provides a new way to map all organisms, the metabolically active subset, and associated mineral grains, as well as maintaining spatial integrity of an environmental microbiome. To quantitatively assess relationships between spatial connectivity and metabolic activity, this report provides a new way to map all organisms, the metabolically active subset, and associated mineral grains. With decreasing distance from the sediment-air surface and within mineral grain outer boundaries, organism abundance decreased, but the number of metabolically active organisms often increased. Researchers will be able to see microbial populations u2018as they really are u2019as they really are u2019as they really areu2019as they really areu2019 and investigate determinants of metabolic activity in a variety of microbiomes.

Source link: https://doi.org/10.1093/femsle/fnaa031


New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XVII. Paraberzeliite, NaCaCaMg 2 (AsO 4 ) 3 , an alluaudite-group member dimorphous with berzeliite

The new alludurite-group mineral berzeliite was discovered in the Arsenatnaya fumarole, Second scoria cone of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia, with the Northern Breakthrough. Hematite, calciojohillerite, badalovite, johille, tilasite, nickenichite, schole, tilasite, sanidine, fluorophlogopite, anhydrite, metathu00e9nardite, belo U00d7 0. 2 mm u00d7 1 mm u00d7 1 mm often occurring in open-work aggregates, according to paraberte. U03a34. 88 atoms per formula unit The calculated empirical formula based on 12 O atoms per formula unit is u03a33. 05 O 12. Parabertzeliite is isostructural with other alluaudite-group minerals. A Ca A Mg 2 3. Its reduced crystal chemical formula is A Ca A A'Na M Mg 2 3. Ideally, Mg 2 3. The term berzeliite refers to this alluuaudite-group mineral with the arsenate garnet berzeliite, as shown by the numeral, with the exception of Mg 2 3.

Source link: https://doi.org/10.1180/mgm.2021.82


Fumarole-Supported Islands of Biodiversity within a Hyperarid, High-Elevation Landscape on Socompa Volcano, Puna de Atacama, Andes

ABSTRACT PROTEKT Fumarolic activity near the summit of Socompa Volcano in the Andes mountains' arid heart supports the emergence of mat-like photoautotrophic populations. We investigate the bacterial and eucaryotic assemblages on Socompa's coast in a drought, high-elevation landscape where sparse vascular plants grow to only 4,600 m. here, we use biogeochemical and molecular phylogenetic methods to identify these populations. Two fumarolic soil samples and two reference soil samples, as well as the volcanic rubble that covers the majority of the mountain, were PCR amplified, cloned, and sequenced from two fumarolic soil samples and two reference soil samples, including the volcanic remains that cover the majority of the mountain. In contrast, modest fumarolic inputs were associated with increased soil moisture and nutrient levels, the presence of chlorophyll a, and 13 C-rich soil organic carbon. Human activities affected the fumarolic soils, and fumarole-based photoautotrophic groups that are particularly vulnerable to anthropogenic change, according to the researchers.

Source link: https://doi.org/10.1128/aem.01469-08


Cristobalite and tridymite from deposits of the Arsenatnaya fumarole (Tolbachik volcano, Kamchatka, Russia)

This article presents findings on cristobalite and tridymite from the Arsenatnaya's active fumarole, the Tolbachik volcano, Kamchatka, Russia. Fumarolic cristobalite is tetragonal, according to one of samples, the unit-cell measurements for one of samples are: u0430 = 5,975 cristobalite, u00c5, u00c5 = 6,944 u00c5 = 6,944 u00c5 ft. V = 171,89 -U00c5 3. In the Arsenatna fumarole, there are two types of tridymite – monoclinic and orthorhombic u2014. u2014 not lower 450, not lower 450 u20135050 aort a higher degree of HCl and tridymite formation conditions have been found in the process of basalt modification by fumarolic gas. Mineral assemblages of cristobalite and tridymite indicate high-temperature formation conditions of these minerals.

Source link: https://doi.org/10.33623/0579-9406-2021-2-87-96


THE FUMAROLE «LEDOVAYA» OF ICHINSKY VOLCANO (KAMCHATKA) IN 2020

The Ichinsky volcano is the highest volcanic structure of Kamchatka's Sredinny Range. The presence of fumarole activity on the volcano's northern slopes is suspected since 1956. A hole in the ice mass 9. 8 m in diameter exists in the upper portion of the funnel, with vapor-gas clouds rising to 5u201310 m above its level. The probable temperature of the vapor-gas mixture of fumaroles at the eruption's outlet of the volcano rocks, according to the authors, is much higher than 100° C.

Source link: https://doi.org/10.31431/1816-5524-2021-4-52-108-112


Thermessaite-(NH 4 ), (NH 4 ) 2 AlF 3 (SO 4 ), a new fumarole mineral from La Fossa crater at Vulcano, Aeolian Islands, Italy

Abstract Thermessaite-, ideally 2 AlF 3, is a new mineral found as a medium- to high-temperature fumarole encrustation along the rim of La Fossa's crater, Vulcano, Italy's northern rim. 5. 65, 4. 84, 6. 85, 3. 06, 2. 68, 2. 78, 2. 78, 4. 79 The eight best reflections in the powder X-ray diffraction results [ d in u00c5] include: 5. 65, 4. 84, 6. 85, 3. 06, 3. 06, 2. 68, 2. 78, 5. 80, 2. 78, 2. 80, 3. 68, 2. 78, 3. 68, and 2. 78 — Total 102. 90, according to O. H. , the average chemical composition, determined by quantitative SEM-EDS, is: K 2 O 3. 38, Al 2 O 3 25. 35, SO 3 36. 48, F 26. 48, O = F 102. 90. [ 1. 85 K 0. 15 ] u03a32. 00 Al 1. 06 F 2. 96 S 0. 06 O 3. 06 0 0. 06 0 0. 06 0 0. 06. I 3. 06 3. 1 ° 43. 00 ] u 03a32. 00 Al 1. 06 S 0. 94 O 3. 06. 0 0. 19 0. 05 S 0. 68 O 3. 06. 26. 05 S 0. 98 O 3. 06 1. 2 0. 05 S 0. 96 S 0. 06 Both trans oxygen atoms [Alu2013O = 1. 920 u00c5] are from SO 4 tetrahedra, and [Alu2013O = 1. 920 u00c5] are from tetrahedra. NH 4 + ions appear in layers parallel to those that alternate regularly, with layers containing ribbons of corner-sharing AlF 4 O 2 octahedra and associated SO 4 groups. The NH 4+ ions are surrounded by five oxygen atoms and four fluorine atoms. The mineral is identified as the anthropogene of thermessaite, K 2 AlF 3, and refers to an anthropogenic phase discovered in the Anna I coal dump, Aachen, Germany, where it corresponds to an anthropogenic phase. Both mineral and mineral names have been accepted by the International Mineralogical Association Commission on New Minerals, Nomenclature, and Classification of minerals.

Source link: https://doi.org/10.1180/mgm.2021.69

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions