kwarts

Definitions of kwarts
  1. noun
    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
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    types:
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    rookkwarts, rooktopaas
    a smoky yellow or brown quartz
    amethist
    a transparent purple variety of quartz; used as a gemstone
    chalcedon
    a milky or greyish translucent to transparent quartz
    agaat
    an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles
    heliotroop
    green chalcedony with red spots that resemble blood
    kornalijn
    a translucent red or orange variety of chalcedony
    type of:
    delfstof, mineraal, voedingszout
    solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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