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FELDSPAR structure
Chemical Name:
FELDSPAR;feldspars;rhombicquartz;Potashfeldspar;feldspathicrock;feldspar-sodium;felspar=feldspar;Potassium feldspars;Hightemperatureflux;Feldspar-groupminerals
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FELDSPAR Properties



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FELDSPAR Chemical Properties,Uses,Production


Pottery, enamel, and ceramic ware; glass; soaps; abrasive; bond for abrasive wheels; cements and concretes; insulating compositions; fertilizer; poultry grit; tarred roofing materials.


General name for a group of sodium, potassium, calcium, and barium aluminum silicates. Commercially, feldspar usually refers to the potassium feldspars with the formula KAlSi 3O8, usually with a little sodium. Noncombustible.


Toxic as fine-ground powder.

Agricultural Uses

Feldspars, a group of silicate materials, are the most abundant minerals in the earth's crust. Feldspars have a structure in which (SiAl)O4 tetrahedral is linked together with potassium, sodium and calcium. Occasionally, barium ions also occupy large spaces in the same framework. Commercially, feldspar usually refers to potassium feldspar with the formula KA1Si3O8. This feldspar has little sodium.
The chemical composition of feldspars may be expressed as combinations of (a) anorthite (CaAl2Si2O8), (b) albite (NaAlSi3O8),(c) orthoclase (KAlSi3O8), and (d) celcian (BaAl2Si2O8).
Feldspars form colorless, white or pink crystals with a hardness of 6 on the Mho's scale. They are used in pottery, cement and concrete, insulating compositions, fertilizers and glass.
Feldspars are subdivided into two groups. One of them is alkali feldspar (including microcline, orthoclase and sanidine) which has a significant amount of potassium, a smaller proportion of sodium and negligible calcium. The other group, namely plagioclase feldspar, varies in composition from pure sodium feldspar (albite) to pure calcium feldspar (anorthite) with negligible amounts of potassium.

Industrial uses

Feldspars (Al2O3 and SiO4 tetrahedra) constitute60% of the outer 13 to 17 km of the earth’scrust and are the most common mineral in crystallinerocks. Feldspars are aluminum silicatesof potassium, sodium, and calcium.
The importance of the many feldspars thatoccur so widely in igneous, metamorphic, andsome sedimentary rocks cannot be underestimated,especially from the viewpoint of apetrologist attempting to unravel Earth history.
With weathering, feldspars form commerciallyimportant clay materials. Economically.feldspars are valued as raw material for theceramic and glass industries, as fluxes in ironsmelting, and as constituents of scouring powders.Occasionally, their luster or colors qualifythem as semiprecious gemstones. Some decorativebuilding and monument stones are predominantlycomposed of weather-resistantfeldspars.
Knowledge of the composition of a feldsparand its crystal structure is indispensable to anunderstanding of its properties. However, it isthe distribution of the aluminum and siliconatoms among the available tetrahedral sites ineach chemical species that is essential to a completeclassification scheme, and is of greatimportance in unraveling clues to the crystallizationand thermal history of many igneous andmetamorphic rocks.

FELDSPAR Preparation Products And Raw materials

Raw materials

Preparation Products

FELDSPAR Suppliers

Global( 19)Suppliers
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Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21756 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20672 55
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23962 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28237 58
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40269 62
Chizhou Kailong Import and Export Trade Co., Ltd. Please Email
- China 9562 50
Shanghai Orgchem Co.,Ltd. +86-21-5877 1921
+86-21-5877 1925 China 9692 55
JinJinLe Chemical 10106090 China 9451 58
Ningbo Pan Titanium Chemical Co., Ltd.
China 78 58
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