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Crystallization in a formerly crystal-free (amorphous) glass
Devitrification is the process of crystallization in a formerly crystal-free (amorphous) glass. The term is derived from the Latin vitreus, meaning glassy
Devitrification
Type of claystone, composed of absorbent smectite clay minerals
circulation through the porosity of volcanic ash beds, which converts (devitrification) the volcanic glass (obsidian, a volcanic glass with a chemical composition
Bentonite
Naturally occurring volcanic glass
p. 12. ISBN 9780816550036. Marshall, Royal R. (October 1, 1961). "Devitrification of Natural Glass". GSA Bulletin. 72 (10): 1493–1520. Bibcode:1961GSAB
Obsidian
Manufacturing process
effect phase transformations, as in conversion of anatase to rutile or devitrification of glass materials; removal of ammonium ions in the synthesis of zeolites;
Calcination
Silica mineral, polymorph of quartz
Cristobalite Cristobalite spherulites formed by devitrification from the obsidian matrix. Specimen from California, US; size: 5.9 cm × 3.8 cm × 3.8 cm
Cristobalite
Natural zeolite mineral
to 4 and a specific gravity of 2.1 to 2.2. It commonly occurs as a devitrification product of volcanic glass shards in tuff and as vesicle fillings in
Clinoptilolite
Natural glass found in South Australia
can be caused by chemical weathering (oxidation, mineralization) and devitrification. Proposed origins for Edeowie and other similar lechatelierites include
Edeowie_glass
Texture in igneous rocks
Graphic texture is commonly created by exsolution and devitrification and immiscibility processes in igneous rocks. It is called 'graphic' because the
Graphic_texture
Rock consolidated from volcanic ash
silicification (which has filled them with opal, chalcedony, and quartz) and by devitrification. The frequent presence of rounded corroded quartz crystals, such as
Tuff
Fused coating on ceramic objects
low surface tension, high index of refraction, and resistance to devitrification. Lead used in the manufacture of commercial glazes are molecularly
Ceramic_glaze
Metal sulfide ore deposit
massive sulfide deposit. Typical alteration textures associated with devitrification of submarine volcanic rocks such as rhyolitic glasses, notably formation
Volcanogenic massive sulfide ore deposit
Volcanogenic_massive_sulfide_ore_deposit
Type of glasswork
undesirable effects such as unattractive discoloration, bubbling, or devitrification. Borosilicate glass is considered more forgiving to work with, as its
Lampworking
spherulites at their margins. Such textures may document solid-state devitrification of glass. Granophyre – Type of subvolcanic rock Rock microstructure –
Micrographic_texture
Type of metal fluoride glass
larger samples are obtained. One of the problems encountered was the devitrification tendency upon cooling the melt. The second breakthrough was the discovery
ZBLAN
Electron microscopy technique
knife in a cryoultramicrotome at temperatures lower than −135 °C (devitrification temperature). The sections are collected on an electron microscope
Cryogenic_electron_microscopy
Joining together of pieces of glass at high temperature
temperature range of 815 °C (1,499 °F) to 573 °C (1,063 °F) to avoid devitrification. The glass is then allowed to cool slowly over a specified time, soaking
Glass_fusing
usually are more ductile and less brittle than regular ceramics. "Glass Devitrification Produces Nanostructures - NanoSteel 1-877-293-6266". Archived from
Nanophase_material
River in China and Mongolia
(pitchblende) / coffinite assemblages within conglomerates and sandstones. Devitrification of volcanic glass is a potential source of uranium in the region's
Kherlen_River
Type of volcanic rock containing large porphyritic crystals of quartz
passed into very finely crystal-line state. This change is called devitrification; it is common in glasses, as these are essentially unstable. A large
Quartz-porphyry
Geologic formation in New Mexico
the Pajarito Plateau but is interpreted by Broxton and Reneau as a devitrification front rather than a cooling unit boundary. The beds below the vapor
Bandelier_Tuff
Mineral discovered by the Apollo 14 crew
14076 is described having the composition of glass that has undergone devitrification which is considered to be uncommon with glasses found elsewhere on
Yoshiokaite
itself. The pillow basalt is relatively well preserved in places, where devitrification rims clearly outline the individual pillows. It is composed of dark
Moel_yr_Ogof
Large Miocene-age caldera in northern Chile
degree of welding of the ignimbrite, the occurrence or absence of devitrification and the jointing patterns. In fact, a segment of the northern Atana
La_Pacana
German–Australian glass artist
palette of coloured glass but also help with the incompatibility and devitrification problems that he was experiencing. One of his students at Pilchuck
Klaus_Moje
Indian physicist
of Science & Technology, Govt of India. Retrieved 17 August 2021. "Devitrification Demystified". Indinan Institute of Science, Bangalore. Retrieved 17
Rajesh_Ganapathy
Mountain in Chile
here contains five to 30 percent phenocrysts, and has high levels of devitrification and lithic content. The differences between these two deposits can
Calabozos
Miocene caldera in Salta Province, Argentina
structures similar to large lava flows. The deposits underwent some devitrification due to vapour action. This ignimbrite has a maximum thickness of 450
Aguas_Calientes_caldera
Science award
Craters-A Brief History of Their Recognition 1974–1975 Paul P. Sipiera Devitrification Studies on Chemical Compositions Corresponding to Ca-Al-Rich Inclusions
Nininger_Meteorite_Award
Geologic formation in Neuquén Province, Argentina
Possibly, the same factors that contributed to the alteration and devitrification of the pyroclastites also influenced the degradation of the bone materials
Cerro_Bandera_Formation
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Shri Raghavendra Prabhu, Mantralaya
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Indian, Tamil
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Shanmuka means Lord of Subramaniam son of Lord Shiva, Lord kartikeyalord Murugan
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English : topographic name for someone who lived near a piece of land where rye was grown, from Old English ryge ‘rye’ + land ‘land’.Norwegian : habitational name from any of three farmsteads in Vestlandet so named from an unexplained first element + land ‘land’, ‘farm’.Probably an altered spelling of Dutch Reiland.
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Forest
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Sacred
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DEVITRIFICATION
n.
The act or process of devitrifying, or the state of being devitrified. Specifically, the conversion of molten glassy matter into a stony mass by slow cooling, the result being the formation of crystallites, microbites, etc., in the glassy base, which are then called devitrification products.