2010-02-01
Quarry – The location of an operation where a natural deposit of china granite is removed from the countertop .
Quartz – A silicon dioxide mineral that occurs in colourless and transparent or coloured hexagonal crystals and also in crystalline masses. One of the most common minerals, the chief constituent of sandstone.
Quartzite – A compact granular rock composed of quartz crystals, usually so firmly cemented as to make the mass homogenous. The stone is generally quarried in stratified layers, the surfaces of which are unusually smooth. Its crushing and tensile strengths are extremely high; the colour range is wide.
Quartzitic sandstone – A sandstone with a high concentration of quartz grains and siliceous cement.
Quirt – A groove separating a bed or other moulding from the adjoining numbers.
Quoins – Stone at the corner of a wall emphasised by size, projection, and rustication or by a different finish.