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61. The minerals of kaolin ores consist mainly of kaolinite as well as halloysite, hydromuscovite, quartz associated with Small amounts of feldspar.

62. The fine structure of natural alkali feldspar selected from the basalt in the Hannuoba district, China was investigated by means of high resolution electron microscopy(HREM).

63. The deposit is an alkali - feldspar granite type Ta deposit.

64. The development of ceramics industry of Anhui promotes the utilization of potassium feldspar resources.

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65. Oil shales are of mostly schistic grey-black and mainly composed of hard clay minerals with a little quartz, a few feldspar scraps and bituminous flecks.

66. Under P-stress, mobilization and utilization of structural K in gneiss and feldspar by maize (Zea mays L.

67. Their primary rocks were mainly graywacke, debris sandstone and few feldspar sandstone, ext.

68. Potash feldspar quartz crenulate often appears on the top of rock masses which are related to the molybdenum deposits.

69. The active strong-to-weak sequence of organic dibasic acid on feldspar is oxalic acid, propanedioic acid, succinic acid, hexanedioic acid and sebacic acid.

70. The ore mineral assemblage of Dayishan wollastonite deposit is complex being composed of wollastonite, diopside, idocrase, K—feldspar, albite, calcite and quartz.

71. Feldspar commonly used are: granite a long stone set fire to rocks.