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silica-glass ampoules

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Schematic drawing of two evacuated <span class="search-highlight">silica</span>-<span class="search-highlight">glass</span> <span class="search-highlight">ampoules</span> prepared for step-...
Published: 01 May 2001
Fig. 1. Schematic drawing of two evacuated silica-glass ampoules prepared for step-2 experiments. In the ampoule on the right side, the sample is wetting a loop of Pt-wire placed inside an AgPd crucible. On the left side, the sample was put directly into the crucible. Dimensions of the ampoules
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Two <span class="search-highlight">silica</span>-<span class="search-highlight">glass</span> <span class="search-highlight">ampoules</span>  after  quenching from step-2 experiments (a, b),...
Published: 01 May 2001
Fig. 2. Two silica-glass ampoules after quenching from step-2 experiments (a, b), an empty AgPd crucible (outer diameter: 5 mm) with lid (c) and a sample wetting a Pt-wire loop (d). Conditions of the step-2 experiments: 24 hours at 1180 °C for ampoule (a); 138 hours at 1133 °C for ampoule (b
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Set-up of pyrrhotite synthesis: <span class="search-highlight">silica</span> <span class="search-highlight">glass</span> <span class="search-highlight">ampoule</span> loaded with initial ma...
Published: 26 October 2021
Fig. 1. Set-up of pyrrhotite synthesis: silica glass ampoule loaded with initial materials (charge) + salt flux. The Pt wire is at the hot side of the ampoule.
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Set-up of pyrite synthesis experiment: <span class="search-highlight">silica</span> <span class="search-highlight">glass</span> <span class="search-highlight">ampoule</span> loaded with ini...
Published: 01 December 2019
Fig. 1. Set-up of pyrite synthesis experiment: silica glass ampoule loaded with initial materials (charge) + salt flux. A piece of Pt wire or strip is placed at the hot side of the ampoule.
Journal Article
Published: 01 May 2001
European Journal of Mineralogy (2001) 13 (3): 467–478.
...Fig. 1. Schematic drawing of two evacuated silica-glass ampoules prepared for step-2 experiments. In the ampoule on the right side, the sample is wetting a loop of Pt-wire placed inside an AgPd crucible. On the left side, the sample was put directly into the crucible. Dimensions of the ampoules...
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Journal Article
Published: 01 November 2019
American Mineralogist (2019) 104 (11): 1638–1649.
... couples for Si. Experiments were run in air in crimped Pt capsules, or in sealed silica glass ampoules with solid buffers (to buffer at NNO or IW). Al profiles were measured with Nuclear Reaction Analysis (NRA) using the reaction 27 Al(p,γ) 28 Si. Rutherford Backscattering spectrometry (RBS) was used...
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Journal Article
Published: 01 October 2015
American Mineralogist (2015) 100 (10): 2053–2065.
... in evacuated silica-glass ampoules at oxygen fugacities fixed by solid-state buffers, generally Ni-NiO but also including two experiments buffered at wüstite-magnetite. Phosphorus uptake profiles were characterized by Rutherford backscattering spectroscopy (RBS) and nuclear reaction analysis (NRA...
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Journal Article
Published: 01 February 2010
American Mineralogist (2010) 95 (2-3): 362–368.
... in 3:1 proportions] and polished forsterite in platinum capsules. For buffered experiments on natural olivine, samples were placed with the source in AgPd capsules, sealed under vacuum in silica glass ampoules with a solid buffer (NNO, IW, or graphite). In some experiments, ground natural olivine...
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Photomicrographs showing textural features of run products of supersolidus ...
Published: 01 May 2010
) Run SiO 2 -9 showing devitrified silica-glass ampoule (tube); but in some locations, devitrification is confined to the inner tube. Tridymite crystals radiate from the devitrified capsule wall. An epoxy-filled void space occupies the left half of the image.
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(a) Decreasing silver content of AgPd crucibles with increasing run duratio...
Published: 01 May 2001
takes place within the evacuated silica-glass ampoules. The Ag contents are means from single values recorded along a profile through the side wall of a crucible ( Fig. 4 ). Symbols combined with a cross signalize crucibles with thicker walls (600 instead of 300 μm). The run durations are cumulated over
Journal Article
Journal: Economic Geology
Published: 01 December 2017
Economic Geology (2017) 112 (8): 2005–2021.
... sulfide standards using evacuated silica glass ampoules at 0.1 MPa by initially melting starting materials at 1,205°C, followed by slow cooling to 1,000°C and prolonged annealing. Run products were cross calibrated against the Ballhaus-Sylvester standards. A similar synthesis strategy was employed...
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Journal Article
Published: 01 June 2022
Mineralogical Magazine (2022) 86 (3): 492–499.
...) * All sites are fully occupied by Pd and As atoms. The synthetic analogue of mineral stillwaterite Pd 8 As 3 was prepared using the solid phase reaction method in evacuated silica glass ampoules. Pure elements were used (Pd 99.9% Reakhim, As 99.5% Reakhim). Arsenic was preliminarily purified...
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Journal Article
Published: 01 July 2005
European Journal of Mineralogy (2005) 17 (4): 599–610.
... are not too large ( Rabenau, 1973 ). We used ampoules of 9 mm inner diameter and 1 mm wall thickness. The silica glass ampoules were placed in standard stainless steel autoclaves ( Tauson, 1999 ). Lead sulfide was transported across a temperature gradient of 0.4°C/cm (over 25 cm), measured on the outer...
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Journal Article
Published: 01 October 2014
American Mineralogist (2014) 99 (10): 2031–2034.
...) Fe 0.875 S + 3 / 8 S 2 = 7 / 8 FeS 2 according to: The assemblage monoclinic pyrrhotite-pyrite was synthesized in silica-glass ampoules containing an eutectic KCl-AlCl 3 melt (~66 at% AlCl 3 ) with a melting temperature below 427 K ( Moh and Taylor 1971...
FIGURES
Journal Article
Published: 01 December 2022
American Mineralogist (2022) 107 (12): 2219–2225.
... a stoichiometric (3:2) mixture of pure elements (Ni 99.999%, S 99.999%) that were placed into a silica-glass tube. The tube with the charge was evacuated and sealed. The ampoule was placed into a preheated horizontal furnace, and the sample was tempered (200 °C for 32 days; 300 °C for 19 days). Afterward...
FIGURES
Journal Article
Published: 01 May 2010
American Mineralogist (2010) 95 (5-6): 784–798.
... ) Run SiO 2 -9 showing devitrified silica-glass ampoule (tube); but in some locations, devitrification is confined to the inner tube. Tridymite crystals radiate from the devitrified capsule wall. An epoxy-filled void space occupies the left half of the image. ...
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Journal Article
Published: 01 May 2010
American Mineralogist (2010) 95 (5-6): 776–783.
... by the assemblage Sn°+SnO 2 because one of the Sn-bearing phases is consumed by reaction with the excess of SiO 2 . Large quantities of homogeneous Sn-rich glasses may be produced with the evacuated silica-tube technique, and at high temperatures, silica saturation is generally constrained to the melt-ampoule...
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Journal Article
Published: 01 July 2020
American Mineralogist (2020) 105 (7): 1040–1051.
... with the source powders in Pt capsules and crimping capsules shut. For experiments run under buffered conditions, the Pt capsules were placed inside a silica glass ampoule with another crimped Pt capsule containing the buffer material (mixtures of Ni metal and nickel oxide powders to buffer at NNO); silica glass...
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Journal Article
Published: 01 August 2023
Russ. Geol. Geophys. (2023) 64 (8): 989–1004.
...-smoker matter. In the first series of the experiments, the lower part of the ampoule was filled in a layer-wise manner with the powder of basalt glass and that of “black smoker sulfide”; the water-salt solutions were added afterwards ( Table 1 ) ( Damdinov et al., 2022a ; Kotelnikov et al., 2022a , c...
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Journal Article
Journal: Economic Geology
Published: 01 December 2019
Economic Geology (2019) 114 (8): 1649–1663.
...Fig. 1. Set-up of pyrite synthesis experiment: silica glass ampoule loaded with initial materials (charge) + salt flux. A piece of Pt wire or strip is placed at the hot side of the ampoule. ...
FIGURES | View All (10)