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CRISTOBALITE [1 record]
Record 1 - internal organization data 2011-03-15
Record 1, English
Record 1, Subject field(s)
- Chemical Elements and Compounds
- Mineralogy
Universal entry(ies) Record 1
Record 1, Main entry term, English
- cristobalite
1, record 1, English, cristobalite
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- crystalline-cristobalite silica 2, record 1, English, crystalline%2Dcristobalite%20silica
- crystalline silica, cristobalite 3, record 1, English, crystalline%20silica%2C%20cristobalite
- calcined diatomite 2, record 1, English, calcined%20diatomite
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
One of the three main forms of silica (the others being quartz and tridymite), formed at high temperatures as high-cristobalite and changing at lower temperatures to a structurally related metastable polymorph, low-cristobalite, which occurs both massive (e.g. in opal) and as small, usually octahedral, crystals. 4, record 1, English, - cristobalite
Record number: 1, Textual support number: 1 OBS
Chemical formulas: O2Si or SiO2 5, record 1, English, - cristobalite
Record 1, French
Record 1, Domaine(s)
- Éléments et composés chimiques
- Minéralogie
Entrée(s) universelle(s) Record 1
Record 1, Main entry term, French
- cristobalite
1, record 1, French, cristobalite
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- silice cristalline, cristobalite 2, record 1, French, silice%20cristalline%2C%20cristobalite
feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Variété de silice formée à haute température, du système cristallin quadratique pseudo-cubique. 3, record 1, French, - cristobalite
Record number: 1, Textual support number: 1 OBS
La silice ou dioxyde de silicium (formule moléculaire : SiO2) peut exister sous forme de silice cristalline ou de silice amorphe. La silice cristalline, peut se présenter sous plusieurs formes (polymorphes : même formule chimique mais structure cristalline différente). Le quartz (CAS : 14808-60-7) [...] La cristobalite (CAS : 14464-46-1) [...] Le tripoli (CAS : 1317-95-9) [et la] tridymite (CAS : 15468-32-3) [...] 4, record 1, French, - cristobalite
Record number: 1, Textual support number: 2 OBS
Formules chimiques : O2Si ou SiO2 5, record 1, French, - cristobalite
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Elementos y compuestos químicos
- Mineralogía
Entrada(s) universal(es) Record 1
Record 1, Main entry term, Spanish
- cristobalita
1, record 1, Spanish, cristobalita
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Variedad de sílice cristalizada en el sistema tetragonal, que se encuentra en las cavidades internas de la andesita, la traquita y otras rocas volcánicas, especialmente en las mexicanas de San Cristóbal, a las cuales debe su nombre. 1, record 1, Spanish, - cristobalita
Record number: 1, Textual support number: 1 OBS
Entra también en la composición de ciertas variedades de ágata y de bentonita. Es el producto que resulta al calentarse el cuarzo a más de 1470º C. Normalmente no tendría que existir a la temperatura ambiente, pero constituye uno de los casos del estado metastable. 1, record 1, Spanish, - cristobalita
Record number: 1, Textual support number: 2 OBS
Fórmulas químicas: O2Si o SiO2 2, record 1, Spanish, - cristobalita
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