Welcome to GMM Exim
WHAT IS QUARTZ
It is a hard mineral consisting of silica, found widely in igneous and metamorphic rocks and typically occurring as colorless or white hexagonal prisms. It is often colored by impurities (as in amethyst, citrine, and cairngorm)
Types
    ROCK CRYSTALL
          CITRINE
       ROSE QUARTZ
       AMETHYST
    SMOKY QUARTZ
       MILKY QUARTZ
QUARTZ SPECIFICATIONS
  • CHEMICAL COMPOSITION   :  Silicon Dioxide (SiO2)
  • COLOR                                      :  Common colors are clear,white, gray, Crystal
  • LUSTER                                     :  Vitreous
  • DIAPHANEITY                        :  Transparent to Translucent
  • CLEAVAGE                               :  None (breaks with conchoidal fracture)
  • MOHS HARDNESS                 :  7
  • SPECIFIC GRAVITY                 :  2.6-2.7
  • CRYSTAL SYSTEM                  :  Hexagonal
USES OF QUARTZ & SILICASAND
  • GLASS INDUSTRY

    Quartz sand is used in the production of container glass (bottles and jars), flat plate glass (windows, mirrors), TV tubes and screens, decorative glass and fiberglass
  • AS ABRASIVE

    The high hardness of quartz, seven on the Mohs Scale, makes it harder than most other natural substances. As such it is an excellent abrasive material. Quartz sands and finely ground silica sand are used for sand blasting, scouring cleansers, grinding media, and grit for sanding and sawing.
  • FOUNDRY SAND

    Due to its high resistance to chemicals and heat its often used as Foundry Sand. With a melting temperature higher than most metals it can be used for the molds and cores of common foundry work.
  • PETROLEUM INDUSTRY

    Quartz sand has a high resistance to being crushed. In the petroleum industry sand slurries are forced down oil and gas wells under very high pressures in a process known as hydraulic fracturing. This high pressure fractures the reservoir rocks and the sandy slurry injects into the fractures. The durable sand grains hold the fractures open after the pressure is released. These open fractures facilitate the flow of natural gas into the well bore.
  • OTHER USES OF QUARTZ SAND

    Quartz sand is used as a filler in the manufacture of rubber, paint and putty. Screened and washed, carefully sized quartz grains are used as filter media and roofing granules. Quartz sands are used for traction in the railroad and mining industries. These sands are also used in recreation on golf courses, volleyball courts, baseball fields, children's sand boxes and beaches
  • CERAMICS

    Quartz sand that has been ground to fine size is an ingredient of most clay bodies and is a major constituent of ceramic glazes. Typical everyday products include tableware, sanitary ware, ornaments and wall and floor tiles.
  • FILTRATION

    Being the principal filtration environment in the water industry the silica sand is used-up in water filtration stations, water wells or to prevent crumbling.
  • CONSTRUCTION INDUSTRY

    The construction industry is founded on quartz sand and there are a host of specialist applications including silica and aerated concrete blocks, floor and roof tiles, flooring and renderings compounds, white markings, roofing felt and cement.
  • ADHESIVES

    The quartz sand is a widely used product in manufacturing the adhesives used for: tiles, natural rock pavements, marble.