- Oxide[1]
- Pigment[1]
- Sand[10]
- Marble[10]
- Other Timber[1]
- Tombstones and Monuments[1]
- Charcoal[1]
- Coke Fuel[10]
- Water Treatment[5]
- Abrasives[10]
- Carbon[1]
- Graphite Electrodes[3]
- Graphite Powder[4]
- Other Graphite Products[1]
- Silicon Ingots[1]
- Other Iron[10]
- Bentonite[10]
- Dolomite[10]
- Mica[10]
- Other Non-Metallic Mineral Deposit[2]
- Perlite[10]
- Talc[10]
- Bauxite Ore[10]
- Other Ore[10]
- Refractory[1]
- Contact Person : Ms. Luo MingXia
- Company Name : Lingshou County Jiaqi Mineral Processing Factory
- Tel : 86-0311-80817860
- Fax : 86-0311-83626922
- Address : Hebei,Shijiazhuang,Yanchuan Industry Zone, Lingshou County
- Country/Region : China
- Zip : 050000
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Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals which make up as much as 60% of the Earth's crust. Feldspars crystallize from magma in both intrusive and extrusive igneous rocks, as veins, and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar (see below) is known as anorthosite.Feldspars are also found in many types of sedimentary rock.
Feldspar is a common raw material used in glassmaking, ceramics, and to some extent as a filler and extender in paint, plastics, and rubber. In glassmaking, alumina from feldspar improves product hardness, durability, and resistance to chemical corrosion. In ceramics, the alkalis in feldspar (calcium oxide, potassium oxide, and sodium oxide) act as a flux, lowering the melting temperature of a mixture. Fluxes melt at an early stage in the firing process, forming a glassy matrix that bonds the other components of the system together. In the US, about 66% of feldspar is consumed in glassmaking, including glass containers and glass fiber. Pottery (including electrical insulators, sanitaryware, tableware, and tile) and other uses, such as fillers, accounted for the remainder.
In in earth sciences and archaeology, feldspars are used for K-Ar dating, argon-argon dating, thermoluminescence dating and optical dating.
Potash Feldspar Lumps