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WHAT DOES CRISTOBALITE MEAN IN ENGLISH?
The mineral cristobalite is a high-temperature polymorph of silica, meaning that it has the same chemical formula, SiO2, but a distinct crystal structure. Both quartz and cristobalite are polymorphs with all the members of the quartz group, which also include coesite, tridymite and stishovite. Cristobalite occurs as white octahedra or spherulites in acidic volcanic rocks and in converted diatomaceous deposits in the Monterey Formation of the US state of California and similar areas. Cristobalite is stable only above 1470 °C, but can crystallize and persist metastably at lower temperatures. The persistence of cristobalite outside of its thermodynamic stability range occurs because the transition from cristobalite to quartz or tridymite is "reconstructive", requiring the breaking up and reforming of the silica framework. These frameworks are composed of SiO4 tetrahedra in which every oxygen atom is shared with a neighbouring tetrahedron, so that the chemical formula of silica is SiO2. The breaking of these bonds required to convert cristobalite to tridymite and quartz requires considerable activation energy and may not happen on a human time frame.
The translations of cristobalite from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «cristobalite» in English.
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «cristobalite».
FREQUENCY OF USE OF THE TERM «CRISTOBALITE» OVER TIME
The graph expresses the annual evolution of the frequency of use of the word «cristobalite» during the past 500 years. Its implementation is based on analysing how often the term «cristobalite» appears in digitalised printed sources in English between the year 1500 and the present day.
Examples of use in the English literature, quotes and news about cristobalite
10 ENGLISH BOOKS RELATING TO «CRISTOBALITE»
Discover the use of cristobalite in the following bibliographical selection. Books relating to cristobalite and brief extracts from same to provide context of its use in English literature.
The Potter's Dictionary of Materials and Techniques
If 10% cristobalite is present in the body, the body will contract by the amount A to
C (approximately 1%). This is more than the glaze which is thereby compressed
by the body and unable to craze. The compression, which occurs at 226°C ...
Frank Hamer, Janet Hamer, 2004
Ceramic Technology for Potters and Sculptors
studio firing; hence 1 100°C/2012°F is taken as the working temperature at which
the conversion of quartz to cristobalite starts when firing ceramics. The
conversion takes place slowly and is dependent on the length of time the
Yvonne Hutchinson Cuff, 1996
Ceramic and Glass Materials: Structure, Properties and ...
Cristobalite, the highest-temperature polymorph of silica, was named after the
place where it was discovered, the San Cristobal mountain in Mexico.
Interestingly, silicate phases including cristobalite have also been found in
cosmic dust ...
James F. Shackelford, Robert H. Doremus, 2008
In the latter, the ordered domains had symmetry F 4d 2 (more strictly space group
/ 4d 2) and were distributed in six possible orientations but with long range
disorder and average symmetry Fd3m. It was noted that a-cristobalite can be
William Alexander Deer, Robert Andrew Howie, 2004
High Purity Silicon V
FORMATION OF CRISTOBALITE AT SURFACE OF SILICA GLASSES IN
CONTACT WITH LIQUID SILICON M. Tamura, A. Ikari, M. Hasebe, and W. Ohashi
Nippon Steel Corporation, Kanagawa, Japan. With increasing time for
Cor L. Claeys, 1998
Silicate Glasses and Melts: Properties and Structure
Phase Transitions: Melting and Amorphization At room pressure, Greig 
reported that cristobalite melts at 1713°C on the Geophysical Laboratory
temperature scale. This value, which has been confirmed by Wagstaff ,
translates to ...
B. Mysen, P. Richet, 2005
Nevertheless, it is still much less common than quartz or cristobalite and
occupational exposures to tridymite could be expected in workers mining or
processing powdered igneous rocks. Tridymite (and cristobalite) is produced in
Ken Donaldson, Paul Borm, 2006
Colloidal Silica: Fundamentals and Applications
X-ray results have suggested for a long time that the structure of silica powders
most closely resembles that of cristobalite. Recent results confirm that silica gels
are built up of interconnected six-membered rings of [SiO4) tetrahedra.
Horacio E. Bergna, William O. Roberts, 2005
The Eruption of Soufriere Hills Volcano, Montserrat from ...
cristobalite (devitrification v. vapour phase) is more-readily determined in dome
rock thin sections than in the ash derived from it. An additional explanation for the
greater abundance of cristobalite in ash derived from slowly extruded lava is that
G. Wadge, R.E.A. Robertson, B. Voight, 2014
High Pressure Geochemistry & Mineral Physics: Basics for ...
The high-temperature, cubic aristotype structure ðFd 3mÞ; therefore, becomes
cristobalite 0, the tetragonal a-phase ðP41212Þ is cristobalite I and the new high-
pressure monoclinic phase is referred to as cristobalite II. The symmetry of the ...
S. Mitra, 2004
10 NEWS ITEMS WHICH INCLUDE THE TERM «CRISTOBALITE»
Find out what the national and international press are talking about and how the term cristobalite is used in the context of the following news items.
The Seashell-Inspired Material Creating a New Wave of Safety Gear
and other soft biomaterials, and inorganic silicates such as quartz and cristobalite. Man-made auxetics now include honeycombs and foams, ... «Gizmodo India, May 15»
The seashell-inspired material inspiring a new wave of safety gear …
Examples include certain forms of skin and other soft biomaterials, and inorganic silicates such as quartz and cristobalite. Man-made auxetics ... «The Conversation UK, May 15»
Curiosity update, sols 896-949: Telegraph Peak, Garden City, and …
Initial analysis of the Telegraph Peak sample by CheMin suggests the presence of cristobalite and quartz, two different forms of silica. «The Planetary Society, Apr 15»
Mars rover studies curious mineral deposits
The third sample does contain a large amount of cristobalite, a mineral ... The third possibility is that the cristobalite formed elsewhere and was ... «Walla Walla Union-Bulletin, Apr 15»
NASA's Curiosity eyes prominent mineral veins on Mars
It found a different mineral composition at each, including a silica mineral named cristobalite in the most recent sample. These differences ... «Phys.Org, Apr 15»
An Introduction to Auxetic Materials: an Interview with Professor …
So in terms of natural materials, we can look at naturally-occurring crystalline silicates; α-cristobalite is known to be auxetic. There are also ... «Azom.com, Oct 14»
What is Crystalline Silica? And What Are the Associated Hazards?
Its most common form is Quartz, although it is also found in the lesser known Cristobalite and Tridymite. During the fracking process Crystalline ... «International Environmental Technology, Sep 14»
Research and Markets: Global Market Report of Cristobalite
Global Market Report of Cristobalite (CAS 14464-46-1) aims at providing comprehensive data on Cristobalite globally and regionally (Europe, ... «Business Wire, Aug 14»
OSHA proposes new standard for workplace silica exposure
The new rule would cover all three forms of crystalline silica: quartz, cristobalite, and tridymite. The proposed rule also sets an “action level” of ... «Lexology, Apr 14»
Thomas shines in bench press at combine
Glad to see Jemea's hard work paying off. Where is he projected in the draft? Cristobalite 5pts. Go Jemea, I would love to watch you in the NFL. «Atlanta Journal Constitution, Feb 14»
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