high tridymite

mineral

Also known as: beta2-tridymite, high-tridymite

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June 29, 2026

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Tridymite is a mineral composed of silica (SiO₂) that is stable at temperatures between 870° and 1,470° C (1,598° and 2,678° F). It is one of several forms of silica, including quartz and cristobalite, which share the same chemical composition but have different crystal structures. Tridymite typically forms thin, hexagonal, twinned plates and is commonly found in igneous rocks like trachytes. It can also be present in meteorites. The name "tridymite" refers to its common occurrence in groups of three crystals.123

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tridymite
It has three modifications: high-tridymite, middle-tridymite, and low-tridymite. Tridymite forms thin hexagonal plates that are generally twinned, often in groups of three; its name alludes to this habit. It commonly occurs in igneous rocks, more abundantly than cristobalite, as in the trachytes of Rhineland-Palatinate, Germany; northern Italy; and in…
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It has three modifications: high-tridymite, middle-tridymite, and low-tridymite. Tridymite forms thin hexagonal plates that are generally twinned, often in groups of three; its name alludes to this habit. It commonly occurs in igneous rocks, more abundantly than cristobalite, as in the trachytes of Rhineland-Palatinate, Germany; northern Italy; and in…
Read More