quartz

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Related to Blue quartz: dumortierite

quartz

(kwōrts),
A crystalline form of silicon dioxide used in chemical apparatus and in optic and electric instruments.

quartz

Drug slang
A regionally popular street term for smokable methamphetamine or crack cocaine.
 
Vox populi
Silica, see there.

quartz

(kwōrts)
A crystalline form of silicon dioxide used in chemical apparatus and in optic and electrical instruments.

quartz

(kwōrts)
A crystalline form of silicon dioxide used in chemical apparatus and in optic and electrical instruments.
References in periodicals archive ?
Three different varieties of quartz are also found in the area: dark smoky quartz ("morion"), green quartz (colored by inclusions of actinolite and chlorite) and an unusual blue quartz apparently colored by inclusions of aerinite, a zeolite-facies hydrothermal silicate-carbonate.
The earliest reference to blue quartz in Spain is found in Calderon (1910), who gives the locality only as the Antequera region.
Microscopic study has revealed the intrusive rock to be an augite diabase consisting primarily of augite and plagioclase ([An.sub.55]-[An.sub.63]) plus accessory titanite, albite, epidote, calcite, dolomite, chlorite, hematite, prehnite, actinolite, ilmenite, magnetite, pyrite, dufrenite, deep blue aerinite and blue quartz. The rock ranges from deep green to dull green in color, with a microporfidic to subophitic texture.
Panganiban, "SF Blue Quartz 2"of Bebot Uy, "Jimafer NG 1"of Jun and Rudy Jingco, "JJC Gurkha/Pasay City Cockpit" of Jesse Carlos and Eric dela Rosa, "Lucky Changes RM" of Rene Medina and Jun Velasco, "AA SL" of Mayor Elan, and "Tokwing Fantastic" of Tokwing.