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Words nearby tridymite
Example sentences from the Web for tridymite
The crystals, called cristobalite and tridymite, swim in clouds around stars just before they begin to form planets.Space Bling: From Diamond Planets to Crystal Oceans to Precious Moon Jewels|Alexa Valiente, Jaewon Kang|October 13, 2012|DAILY BEAST
Spherulites may be regarded as radiate aggregates of such microliths (mostly felspar mixed with quartz or tridymite).
When crystalline grains or blebs of quartz occur, we have a quartz-trachyte; when tridymite is abundant, as in the trachyte of Co.Volcanoes: Past and Present|Edward Hull