1. They contain large amounts of the feldspar mineral.

2. Ankerite, haematite, mica and feldspar have also been identified in smaller quantities.

3. If feldspar is present, it is in minor volumes or traces.

4. Petrological observations show excess feldspar in many basaltic lavas which is most easily explained by crystal settling.

5. Quartz, feldspar, and the clay minerals make up the bulk of that contribution.

6. This sandstone consists of quartz primarily and feldspar secondly.

7. Feldspar; leucite; nepheline and nepheline syenite; fluorspar.

8. Underground rich porcelain clay, iron, sodium feldspar resources is allowed to fame.

9. The outlook for feldspar and nepheline syenite depends to a large extent on the strength of the glass container industry.

10. Rock-forming mineral, olivine, pyroxene, hornblende, orthoclase, feldspar, plagioclase, mica, quartz, biotite, calcite and other common metal and nonmetal minerals.

11. Several methods of producing potash fertilizer using potassium feldspar were introduced in brief.

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12. Secondary feldspar was related to the albitization process of feldspar, the albitization of plagioclase began at the early stage of diagenesis, and the albi.

13. A rare plagioclase feldspar with high calcium oxide content occurring in igneous rocks.

14. The mechanism of oxygen isotope exchange between alkali feldspar and fluid is mainly dissolution reprecipitation.

15. Latites contain plagioclase feldspar ( andesine or oligoclase) as large, single crystals (phenocrysts) in a fine-grained matrix of orthoclase feldspar and augite.

16. Industry: petroleum, diamonds, iron ore, phosphates, feldspar, bauxite, uranium, gold.

17. Finally, a temperature is reached when a third mineral, feldspar, joins in.

18. Electron microprobe element maps show the distribution and quantity of alkali feldspar in the fine-grained groundmass of the altered basalts.

19. The result shows that the sintering temperature of ceramic body is reduced, but the toughness is improved obviously on substitution of nepheline for feldspar.

20. The nodule minerals consist of quartz, plagioclase, amphibole, K ? feldspar , goethite, lepidocrocite, δ MnO ? 2 , illite, and muscovite etc.

21. In agreement with published literature, amphibole and pyroxene appeared to dissolve ahead of feldspar.

22. The notes describe the common minerals such as quartz and its polymorphs, coesite, tridymite and cristobalite, feldspar, plagioclase, feldspathoids, pyroxenes, amphiboles, etc.

23. Shaking flask and pot experiment were carried out to study the dissolution of feldspar and growth promoting of the plants by the strain NBT of silicate bacterium.

24. The Penshan granitic body is a calc-alkaline pluton composed of muscovite alkali granite, two-mica alkali feldspar granite and biotite adamellite.

25. Therefore, the albitization of plagioclase is shown in the early stage of diagenesis and albitization of potash feldspar appears only in the late stage of diagenesis.

26. The ore - hunting indicator is of calcite - potassium feldspar veins containing pyritohedron pyrite.

27. The effects of propanedioic acid, succinic acid, hexanedioic acid, sebacic acid and oxalic acid on floatation performance of feldspar and quartz in dodecyl amine system were investigated.

28. A porcelain - fused -- metal material was prepared using the domestic high - purity feldspar powders.

29. The main mineral resources have a crystal, iron, tungsten, tin, manganese, potassium feldspar, quartz sand quality.

30. The forming minerals of the granite mass rock are composed of quartz, albite, potassium feldspar and phlogopite in Pingwu.