English language
Toggle Transcript
tridymite::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Type of | mineral |
Examples of tridymite
tridymite
In addition, NASA's Stardust mission found tridymite minerals in comet Wild 2.
From the sciencedaily.com
The groundmass contains interstitial quartz or tridymite or cristobalite.
From the en.wikipedia.org
The main 3 polymorphs are quartz, cristobalite, and tridymite.
From the en.wikipedia.org
Other phases, e.g. the higher-temperature phases tridymite and cristobalite, are not significant for oscillators.
From the en.wikipedia.org
Thus although tridymite and cristobalite are common minerals in ignimbrites, they may not be primary magmatic minerals.
From the en.wikipedia.org
The crystals, called cristobalite and tridymite, are known to reside in comets, in volcanic lava flows on Earth, and in some meteorites that land on Earth.
From the sciencedaily.com
Note also that both high temperature minerals, cristobalite and tridymite, have both a lower density and index of refraction than quartz.
From the en.wikipedia.org
Commonly in most felsic ignimbrites the quartz polymorphs cristobalite and tridymite are usually found within the welded tuffs and breccias.
From the en.wikipedia.org
Amorphous silica is less toxic than crystalline, but not biologically inert, and diatomite, when heated, can convert to tridymite or cristobalite.
From the en.wikipedia.org
- A mineral form of silica
- Tridymite is a high-temperature polymorph of quartz and usually occurs as minute tabular white or colorless pseudo-hexagonal triclinic crystals, or scales, in cavities in acidic volcanic rocks. Its chemical formula is SiO2. ...
- A rare mineral of volcanic rocks that solidified at a high temperature, with the chemical composition silicon dioxide, SiO2. Tridymite is chemically identical to quartz, but has a different crystal structure. ...
- Silica group mineral in which the tetrahedra occur in sheets. Tetrahedra alternately point up or down to share oxygen with tetrahedra of other sheets, forming six-sided rings perpendicular the sheets. ...
