Composite fillings are typically made of glass or quartz mixed with resins and adhesives.
In 2008, NASA discovered crystals with a similar make-up to quartz surrounding young stars.
quartz orange juice and rice with chicken and French fries for lunch and same for dinner.
They measured the amount of different isotopes of xenon trapped in quartz crystals.
And one must crush mountains of quartz and wash hills of sand to get it.
The minerals at contact are quartz, biotite, magnetite and hornblende.
There's a fine vein of quartz to develop, expensive machinery to install.
Sometimes the quartz is so soft that it may easily be loosened with the pick.
The resulting platinum deposit adheres very strongly to the quartz, and may be soldered to as before.
The mule is started, and in four or five hours the quartz is pulverized.
"silicon dioxide," 1756, from German Quarz, Zwarc "rock crystal," from Middle High German twarc, probably from a West Slavic source, cf. Czech tvrdy, Polish twardy "quartz," noun uses of an adjective meaning "hard," from Old Church Slavonic tvrudu "hard," from Proto-Slavic *tvrd-, from PIE *(s)twer- "to grasp, hold; hard."
A very hard crystalline form of silicon dioxide used in chemical apparatus and in optical and electric instruments.
A hard, transparent trigonal mineral that, after feldspar, is the most common mineral on the surface of the Earth. It occurs as a component of igneous, metamorphic, and sedimentary rocks as well as in a variety of other forms such as rock crystal, flint, and agate. Some crystalline forms, such as amethyst, are considered gemstones. Chemical formula: SiO2.