Raman spectra of water in fluid inclusions: II. Effect of negative pressure on salinity measurement

2015 ◽  
Vol 46 (10) ◽  
pp. 977-982 ◽  
Author(s):  
Alexandre Tarantola ◽  
Marie-Camille Caumon
2010 ◽  
Vol 275 (1-2) ◽  
pp. 58-66 ◽  
Author(s):  
Miriam Baumgartner ◽  
Ronald J. Bakker

2015 ◽  
Vol 46 (10) ◽  
pp. 969-976 ◽  
Author(s):  
Marie-Camille Caumon ◽  
Alexandre Tarantola ◽  
Régine Mosser-Ruck

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1305
Author(s):  
Wenqing Huang ◽  
Pei Ni ◽  
Jungui Zhou ◽  
Ting Shui ◽  
Junying Ding ◽  
...  

Raman spectra of fluid inclusions in gem rubies from Yuanjiang deposit (China) within the Ailao Shan-Red River (ASRR) metamorphic belt showed the presence of compounds such as CO2, COS, CH4, H2S, and elemental sulfur (S8), accompanied by two bands at approximately 2499 and 2570 cm−1. These two frequencies could be assigned to the vibrations of disulfane (H2S2). This is the second case of the sulfane-bearing fluid inclusions in geological samples reported, followed by the first in quartzite from Bastar Craton of India. The H2S2 was likely in situ enclosed by the host rubies rather than a reaction product that formed during the cooling of H2S and S8, suggesting sulfanes are stable at elevated temperatures (e.g., >600 °C). By comparing the lithologies and metamorphic conditions of these two sulfane-bearing cases (Bastar and Yuanjiang), it is suggested that amphibolite facies metamorphism of sedimentary sequence that deposited in a continental platform setting might favor the generation of sulfanes. Sulfanes may play an important role in the mobilization of Cr that is essential for ruby crystallization.


2019 ◽  
Vol 51 (9) ◽  
pp. 1868-1873
Author(s):  
Marie‐Camille Caumon ◽  
Alexandre Tarantola ◽  
Wenjing Wang

2019 ◽  
Vol 474 (474) ◽  
pp. 23-30
Author(s):  
Katarzyna JARMOŁOWICZ-SZULC ◽  
Krystyna WOŁKOWICZ

By the means of the technique of the Raman microspectrometry, the complex history of the Earth can be better understood. That is why the Raman spectra determinations are the object of interest in the present paper. The examples of such experiments are presented based on the analyses performed in last years in different scientific centers (Potsdam, Banská Bystrica, Budapest). The identification of inclusion content is shown and the conclusions are drawn for fluid inclusions in some quartz samples from two different localities in Poland – in the Carpathians and in the Fore-Sudetic Block. The implications of the Raman analyses are discussed. It results from the Raman analyses performed that not fluorescing, gas-filled bubbles of huge fluid inclusions from the Jabłonki and Rabe vicinity (the tectonic mélange zone in the Carpathians) have the complex composition of CH4, CO2 and N2 in different mutual proportions dependent on the sample and locality. In another place, despite the fluorescing background, only methane has been identified by Raman spectra. Similar gas composition was determined in the inclusions in the vein quartz in the Wądroże Wielkie area (the Fore-Sudetic Block).


Author(s):  
George Guthrie ◽  
David Veblen

The nature of a geologic fluid can often be inferred from fluid-filled cavities (generally <100 μm in size) that are trapped during the growth of a mineral. A variety of techniques enables the fluids and daughter crystals (any solid precipitated from the trapped fluid) to be identified from cavities greater than a few micrometers. Many minerals, however, contain fluid inclusions smaller than a micrometer. Though inclusions this small are difficult or impossible to study by conventional techniques, they are ideally suited for study by analytical/ transmission electron microscopy (A/TEM) and electron diffraction. We have used this technique to study fluid inclusions and daughter crystals in diamond and feldspar.Inclusion-rich samples of diamond and feldspar were ion-thinned to electron transparency and examined with a Philips 420T electron microscope (120 keV) equipped with an EDAX beryllium-windowed energy dispersive spectrometer. Thin edges of the sample were perforated in areas that appeared in light microscopy to be populated densely with inclusions. In a few cases, the perforations were bound polygonal sides to which crystals (structurally and compositionally different from the host mineral) were attached (Figure 1).


1982 ◽  
Vol 85 (1) ◽  
pp. 297-303 ◽  
Author(s):  
A. D. Bandrauk ◽  
K. D. Truong ◽  
S. Jandl

1999 ◽  
Vol 3 (1) ◽  
pp. 45-50
Author(s):  
Zbylut J. Twardowski ◽  
Jimmy D. Haynie ◽  
Harold L. Moore
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document