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- The feldspars are by far
the most abundant group of minerals and are found in igneous,
metamorphic and many sedimentary rocks. Felsdpars are framework
silicates where each silica tetrahedra share all corners with its four
- There are two types of
feldspar : Soda peldspar and Potash feldspar. Feldspar- silica mixtures
can occur naturally, such as in sand deposits, or can be obtaied from
flotation of mined and crushed rock.
- Feldspar is currently
produced as a by-product of mining mica from pegmatites and other rocks
associated with the Cherryville quartz monzonite rock in Cleveland
- Until recently,
feldspar was also recovered from the Kings Mountain district in
Cleveland and Gaston counties as a by-product of mining spodumene
- Feldspar is a common raw
material in the production of ceramics. It is used for thermoluminescence
and optical dating in earth sciences and archaeology.It is an ingredient
in Bon Ami brand cleaner.It is used as a glazing material.
- In the flooring sector,
feldspar is the main constituent in the body composition. It is used as a
flux, lowering the vitrifying temperature of a ceramic body during firing
and forming a glassy phase.
- World feldspar consumption
totalled 13.9 million tonnes and is growing on average 2% per annum.
Turkey is the leading exporter, accounting for 33% of all exports by
quantity, while Italy and the USA remain the leading importers. In Asia
production of feldspar is worth over US$180 million.
U.S. production of marketable feldspar was an
estimated 800,000 metric tons with a value of $44.1 million . Feldspar
was mined in seven States, which were, in descending order of output,
North Carolina, California, Virginia, Georgia, Oklahoma, Idaho, and
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