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Deutsche Quarzporphyr Synonyme

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Englische quartz porphyry Synonyme

Quarzporphyr Definition

Porphyry
(n.) A term used somewhat loosely to designate a rock consisting of a fine-grained base (usually feldspathic) through which crystals, as of feldspar or quartz, are disseminated. There are red, purple, and green varieties, which are highly esteemed as marbles.
Quartz
(n.) A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors

quartz porphyry Bedeutung

crystal oscillator
quartz oscillator 		an oscillator that produces electrical oscillations at a frequency determined by the physical characteristics of a piezoelectric quartz crystal
quartz battery
quartz mill 		a stamp mill for stamping quartz
quartz crystal a thin plate or small rod of quartz cut along certain lines and ground so that it can produce an electric signal at a constant frequency, used in crystal oscillators
quartz lamp a mercury-vapor lamp that is enclosed in a quartz container instead of a glass container
quartz a hard glossy mineral consisting of silicon dioxide in crystal form, present in most rocks (especially sandstone and granite), yellow sand is quartz with iron oxide impurities
rock crystal
transparent quartz 		a clear quartz used in making electronic and optical equipment
cairngorm
smoky quartz 		a smoky yellow or brown quartz
quartz glass
quartz vitreous silica
lechatelierite
crystal 		colorless glass made of almost pure silica
porphyry
porphyritic rock 		any igneous rock with crystals embedded in a finer groundmass of minerals
rose quartz a translucent roseed variety of quartz used for ornaments
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