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Cristobalite (/krɪˈstoʊbəˌlaɪt/) is a
mineral polymorph of
silica that is
formed at very high temperatures. It has the same
chemical formula as quartz...
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polymorphs of
cristobalite and / or tridymite.
These polymorphs also
experience temperature-induced inversions. The
inversion of
cristobalite at 220 °C can...
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found naturally occurring as quartz,
tridymite (high-temperature form),
cristobalite (high-temperature form),
stishovite (high-pressure form), and coesite...
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appear to be
closer to that of
cristobalite and
tridymite than to quartz. The
structures of
tridymite and
cristobalite are
closely related and can be...
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powdered metallic cobalt and
nickel and
crystalline silica (quartz,
cristobalite and tridymite). Usually,
physical carcinogens must get
inside the body...
- high-temperature form of
cristobalite,
which have a
similar structure, with one kind of atom (such as
silicon in
cristobalite) at the
positions of carbon...
- small, white,
radially clustered crystals (spherulites) of the
mineral cristobalite in the
black gl****
produce a
blotchy or
snowflake pattern (snowflake...
- health. In the 1930s,
workers with long-term
occupational exposure in the
cristobalite diatomaceous earth industry who were
exposed to high
levels of airborne...
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Volcanogenic constituents: Tuffites,
volcanic ash, montmorillonite,
cristobalite,
zeolites Terrigenous constituents: Quartz, feldspars, rock fragments...
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sudden temperature changes that may
damage the crystals.
Tridymite and
cristobalite are high-temperature
polymorphs of SiO2 that
occur in high-silica volcanic...
