CO2–H2S–COS–S8–AlO(OH)-bearing fluid inclusions in ruby from marble-hosted deposits in Luc Yen area, North Vietnam

Giuliani, Gaston; Dubessy, Jean; Banks, David; Quang, Vinh Hoàng; Lhomme, Thérèse; Pironon, Jacques; Garnier, V.; Trinh, Phan Trong; Van, Long Pham; Ohnenstetter, Daniel; Schwarz, Dietmar

doi:10.1016/s0009-2541(02)00276-0

Cited by 65 publications

(45 citation statements)

References 21 publications

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“…The native sulphur key wavebands were 550-950 cm -1 , with strong bands in the range 800-950 cm -1 (Eckert and Steudel, 2003;Giuliani et al, 2003).…”

Section: Analytical Proceduresmentioning

confidence: 99%

“…The absorption band of FTIR spectra representative of components and solutes in fluid inclusions were identified through various references e.g., 900-1,500 cm -1 (for SO 4 2− and HSO 4 − ; Fortin et al, 2002;Oppenheimer and Kyle, 2008), 1,010-1,240 and 2,440-2,780 cm -1 (for SO 2 ; Giuliani et al, 2003;Oppenheimer and Kyle, 2008), 1800-2,850 cm -1 (for H 2 S; Giuliani et al, 2003), 2,020-2,400 cm -1 (for CO, CO 2 , and COS; Linnen et al, 2004;Oppenheimer and Kyle, 2008) and near 3,200-3,700 (for H 2 O; Dereppe et al, 1994;Linnen et al, 2004). The native sulphur key wavebands were 550-950 cm -1 , with strong bands in the range 800-950 cm -1 (Eckert and Steudel, 2003;Giuliani et al, 2003).…”

Section: Analytical Proceduresmentioning

confidence: 99%

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Hydrothermal alteration, fumarolic deposits and fluids from Lastarria Volcanic Complex: A multidisciplinary study

Aguilera

Layana

Rodríguez-Díaz

et al. 2016

andgeo

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ABSTRACT.A multidisciplinary study that includes processing of Landsat ETM+ satellite images, chemistry of gas condensed, mineralogy and chemistry of fumarolic deposits, and fluid inclusion data from native sulphur deposits, has been carried out in the Lastarria Volcanic Complex (LVC) with the objective to determine the distribution and characteristics of hydrothermal alteration zones and to establish the relations between gas chemistry and fumarolic deposits. Satellite image processing shows the presence of four hydrothermal alteration zones, characterized by a mineral assemblage constituted mainly by clay minerals, alunite, iron oxides, and more subordinated ferrous minerals and goethite. Hydrothermal alteration zones present in the Lastarria sensu stricto volcano are directly related to the recent fumarolic activity. Geochemistry of fumarolic gas condensed, obtained from two fumaroles at temperatures between 328 and 320 °C, has allowed detecting 37 diverse elements corresponding to halogens, chalcophiles, siderophiles, alkali metals, alkali earth metals and Rare Earth Elements (REE), with concentrations that vary widely between 5,620 ppm (chlorine) and 0.01 ppm (Mo, Ag, Sn, Pb, Se, Mg and Cr). Logarithm of Enrichment Factor (log EF i ) for each element present values between 6.35 (iodine) and <1 (K, Na, Ca, Fe and Al). Those elements are originated primarily from a magmatic source, whereas at shallow level a hydrothermal source contributes typical rock-related elements, which are leached from the wall rock by a strong interaction with hyperacid fluids. Mostly of elements detected are transported to the surface in the fumarolic emissions as gaseous species, while very few elements (Mg, Ca and Al) are transported in silicate aerosols. A wide spectrum of minerals are present in the fumarolic deposits, which are constituted by sublimates and incrustations, and the main minerals phases are distributed in six mineral families, corresponding to sulphates, hydrated sulphates, sulphides, halides, carbonates, silicates and native element minerals. The sublimate/incrustation minerals are dominated by the presence of sulphate, sulphur, chlorine and diverse rock-related elements, which are formed by processes that include a. oxidation of gaseous phase; b. strong rock-fluid interaction; c. dissolution of silicate minerals and volcanic glass; d. gas-water interaction; e. deposition/precipitation of saline bearing minerals; f. oxidation of sublimates/incrustations to form secondary minerals and g. remobilization of sulphur deposits by meteoric water. Despite that sublimate/ incrustation minerals are dominated by rock-related elements, its chemistry shows high contents of high-volatile elements as As, Sb, Cd, among others. Fluid inclusions studies carried out in thin pseudobanded native sulphur from fumarolic deposits, by use of Raman and infrared spectroscopy combined with microthermometry analyses, provided evidence of H 2 O, CO 2 , H 2 S, SO 4 , COS bearing fluids, homogenization temperatures around 110 °C and salinities v...

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“…The native sulphur key wavebands were 550-950 cm -1 , with strong bands in the range 800-950 cm -1 (Eckert and Steudel, 2003;Giuliani et al, 2003).…”

Section: Analytical Proceduresmentioning

confidence: 99%

Section: Analytical Proceduresmentioning

confidence: 99%

Hydrothermal alteration, fumarolic deposits and fluids from Lastarria Volcanic Complex: A multidisciplinary study

Aguilera

Layana

Rodríguez-Díaz

et al. 2016

andgeo

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“…(After Chauvire et al, 2015) All of the gem deposits are located in the Lo Gam zone. The Lo Gam formation consists of a sedimentary series metamorphosed into marble, gneiss, calc-silicates, micaschist, and amphibolite which are sometimes intruded by granitic and pegmatitic dykes (Leloup et al, 2001;Giuliani et al, 2003;Garnier et al, 2008). The marbles are mainly calcitic and interlayered with Al-, V-, and Cr-rich amphibolites.…”

Section: Location and Geologic Backgroundmentioning

confidence: 99%

Study of impurity in blue spinel from the Luc Yen mining area, Yen Bai province, Vietnam

Hường¹,

Haeger

Phan

2017

TCCKHVTD

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In this paper, we present the main impurities in natural blue spinel from the Luc Yen mining area in Yen Bai province, Vietnam. Together with identifying impurities and their valence, we have taken into account the site of some impurities in the MgAl 2 O 4 spinel structure by using sensitive techniques, including electron microprobe analysis (EMPA), UV-Vis-NIR, electron spin resonance (ESR), and X-ray absorption (XAS

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“…Äèàñïîð â êà÷åñòâå äî÷åðíåé ôà-çû ïåðâè÷íûõ ôëþèäíûõ âêëþ÷åíèé èçâåñòåí íà ìíîãèõ ìåñòîðîaeäåíèÿõ è ïðîÿâëåíèÿõ êîðóíäà [11, 15, 19]. Íà îñíîâå ýêñïåðèìåíòàëüíûõ è ðàñ÷åòíûõ äàííûõ ïîñòðî-åíû Ð-Ò-äèàãðàììû ñèñòåìû «äèàñïîð -êîðóíä -âî-äà» (AlO[OH]-Al 2 O 3 -H 2 O) [12, 18], ïîçâîëÿþùèå óñòà-íîâèòü ïàðàìåòðû êðèñòàëëèçàöèè òâåðäûõ ôàç.…”

Section: ââåäåíèåunclassified

“…Äàëüíåéøèå èññëåäîâàíèÿ ïåðâè÷íûõ âêëþ÷åíèé â êîðóíäàõ ìåòîäîì ðàìàíîâñêîé ñïåêòðîñêîïèè ïîäòâåð-äèëè íàëè÷èå óãëåêèñëîòû è ìåòàíà, â îòëè÷èå îò êîðóí-äîâ èçâåñòíûõ ìåñòîðîaeäåíèé Âüåòíàìà è Øðè Ëàíêè, ãäå ôëþèä ïåðâè÷íûõ âêëþ÷åíèé ïðåäñòàâëåí ïî÷òè ÷èñòîé óãëåêèñëîòîé [11,15]. Ìîëüíîå îòíîøåíèå óãëåêèñëîòû è ìåòàíà ñîñòàâëÿåò 0.99 è 0.01 ñîîòâåòñòâåííî.…”

Section: ãåîëîãè÷åñêàÿ îáñòàíîâêàunclassified

Conditions of formation of the diaspore in the primary fluid inclusions in corundum of the Sutara deposit (Russian Far East)

Buravleva¹,

Avchenko²,

Pakhomova³

2017

Vestnik IG KomiSC

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ÂâåäåíèåÈçó÷åíèþ êîðóíäîâ ïîñâÿùåíà îáøèðíàÿ ëèòåðàòó-ðà [10, 16, 17, 20, 22]. Äèàñïîð â êà÷åñòâå äî÷åðíåé ôà-çû ïåðâè÷íûõ ôëþèäíûõ âêëþ÷åíèé èçâåñòåí íà ìíîãèõ ìåñòîðîaeäåíèÿõ è ïðîÿâëåíèÿõ êîðóíäà [11, 15, 19]. Íà îñíîâå ýêñïåðèìåíòàëüíûõ è ðàñ÷åòíûõ äàííûõ ïîñòðî-åíû Ð-Ò-äèàãðàììû ñèñòåìû «äèàñïîð -êîðóíä -âî-äà» (AlO[OH]-Al 2 O 3 -H 2 O) [12, 18], ïîçâîëÿþùèå óñòà-íîâèòü ïàðàìåòðû êðèñòàëëèçàöèè òâåðäûõ ôàç. Îäíàêî ðåçóëüòàòû ýòèõ ýêñïåðèìåíòîâ íåâîçìîaeíî ýêñòðàïîëè-ðîâàòü íà ïðèðîäíûå îáñòàíîâêè, ïîñêîëüêó ïðèðîäíûå ôëþèäû îáîãàùåíû óãëåêèñëîòîé, ìåòàíîì è äðóãèìè êîìïîíåíòàìè, ÷òî âûçûâàåò ñìåùåíèå ðàâíîâåñèÿ «äè-àñïîð -êîðóíä» â íèçêîòåìïåðàòóðíóþ îáëàñòü.Íà ïðèìåðå äèàñïîðà, âïåðâûå îáíàðóaeåííîãî íàìè â êîðóíäàõ çîëîòîðóäíîãî ìåñòîðîaeäåíèÿ Ñóòàðà â êà÷å-ñòâå äî÷åðíåé ôàçû ïåðâè÷íûõ âêëþ÷åíèé [8] CONDITIONS OF FORMATION OF THE DIASPORE IN THE PRIMARY FLUID INCLUSIONS IN CORUNDUM OF THE SUTARA DEPOSIT (RUSSIAN FAR EAST) S. Y. Buravleva, O. V. Avchenko, V. A. Pakhomova FEGI FEB RAS, VladivostokThe data on the composition of primary fluid inclusions in corundum of Sutara deposit were first obtained by Raman spectroscopy using a Horiba LABRAM HR 800 spectrometer. Their primary fluid inclusions contained daughter diaspore crystals, which had not been previously detected in the inclusions of Sutara corundums (Jewish Autonomous Region, Russian Far East). Using Selector software based on thermodynamic calculations reaction:we found that the formation diaspore at CO 2 fluid occurred at a temperature 305 °Ñ and did not depend on pressure. In the H 2 O-CO 2 fluid, the balance of corundum -diaspore shifted in the high temperature section and detected dependence on pressure. Thus, for the known temperature and the composition of H 2 O-CO 2 fluid the diaspore inclusion in corundum may serve as geothermometer. Keywords: corundum; primary inclusions, diaspore, metamorphism, Selector software.ñëóaeèòü ñâîåîáðàçíûì òåðìîáàðîìåòðîì, ïîçâîëÿþùèì âîññòàíîâèòü èñòîðèþ ôèçèêî-õèìè÷åñêèõ óñëîâèé îá-ðàçîâàíèÿ êîðóíäà. Öåëü ðàáîòû -îïðåäåëåíèå óñëîâèé âîçíèêíîâåíèÿ äèàñïîðà. Ãåîëîãè÷åñêàÿ îáñòàíîâêàÐàéîí çîëîòîðóäíîãî ìåñòîðîaeäåíèå Ñóòàðà, ãäå îáíàðóaeåíû êîðóíäîâàÿ ðîññûïü è êîðåííûå ïðîÿâ-ëåíèÿ êîðóíäà -ìàðóíäèòû, íàõîäèòñÿ íà òåððèòî-ðèè Åâðåéñêîé àâòîíîìíîé îáëàñòè è ÿâëÿåòñÿ ÷àñòüþ Ìàëîõèíãàíñêîãî òåððåéíà. Ðàéîí ìåñòîðîaeäåíèÿ õà-ðàêòåðèçóåòñÿ øèðîêèì ðàçâèòèåì ðàííåêåìáðèéñêèõ ìåòàìîðôèçîâàííûõ ãðàôèòîíîñíûõ ãíåéñîâ, êðèñòàë-ëè÷åñêèõ ñëàíöåâ è èçâåñòíÿêîâ, îðäîâèêñêèõ èíòðó-çèé äâóñëþäÿíûõ òóðìàëèíñîäåðaeàùèõ ëåéêîãðàíèòîâ, ñðåäíå-, ïîçäíåêàðáîíîâûõ ãðàíîäèîðèòîâ è ãðàíèòîâ, ñëàãàþùèõ Ñóòàðñêèé ìàññèâ, äàåê ïåãìàòèòîâ (ðèñ. 1).Ìàðóíäèòû -ïîðîäû ñ ñîäåðaeàíèåì êîðóíäà äî 70-90 %, îáðàçóþò ëèíçû è aeèëû íà êîíòàêòå ëåéêîãðà-íèòîâ (ïåãìàòèòîâ) è êðèñòàëëè÷åñêèõ ñëàíöåâ, ñîäåð-aeàùèõ êñåíîëèòû êàðáîíàòíûõ ïîðîä [2,3, 7]. Ðóäû ñî-äåðaeàò ìàðãàðèò, äèàñïîð, ðóòèë, âåðìèêóëèò è ìóñêî-

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CO2–H2S–COS–S8–AlO(OH)-bearing fluid inclusions in ruby from marble-hosted deposits in Luc Yen area, North Vietnam

Cited by 65 publications

References 21 publications

Hydrothermal alteration, fumarolic deposits and fluids from Lastarria Volcanic Complex: A multidisciplinary study

Hydrothermal alteration, fumarolic deposits and fluids from Lastarria Volcanic Complex: A multidisciplinary study

Study of impurity in blue spinel from the Luc Yen mining area, Yen Bai province, Vietnam

Conditions of formation of the diaspore in the primary fluid inclusions in corundum of the Sutara deposit (Russian Far East)

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