Kaolinite (/ ˈ k eɪ. ə l ə ˌ n aɪ t,-l ɪ-/ KAY-ə-lə-nete, -⁠lih-; also called kaolin) is a clay mineral, with the chemical composition Al 2 Si 2 O 5 4.It is a layered silicate mineral, with one tetrahedral sheet of silica (SiO 4) linked through oxygen atoms to one octahedral sheet of alumina (AlO 6).. Kaolinite is a soft, earthy, usually white, mineral (dioctahedral phyllosilicate Kaolinite Image: Images: Kaolinite. Comments: Authigenic kaolinite plates covering a quartz grain overgrown with authigenic quartz. SEM image of a core sample. Location: Unknown. Scale: Picture size 50 µ-m. From the industrial point of view, kaolin is a clayey rock consisting mostly of kaolinite. Kaolinite is one of the most common minerals on Earth and can be easily identi ed by its. fi. almost pure white color, ne particle size ( 1-2 μm), fi. non-toxicity, very low abrasiveness, and chemical stability. Impurities, particularly Fe oxides Kaolinite, group of common clay minerals that are hydrous aluminum silicates; they comprise the principal ingredients of kaolin (china clay). The group includes kaolinite and its rarer forms, dickite and nacrite, halloysite, and allophane, which are chemically similar to kaolinite but amorphous. WHAT IS KAOLIN? Kaolin or china clay is a commercial clay composed principally of the hydrated aluminosilicate clay mineral kaolinite. The commercial value of kaolin is based on the mineral's whiteness and its fine, controllable particle size. Particle size affects fluidity, strength, plasticity, colour, abrasiveness and ease of dispersion. Kaolinite, with the ideal formula Al 2 Si 2 O 5 (OH) 4, is the most abundant compound of the kaolin group of minerals, composed of kaolinite, dickite, and nacrite. Kaolinite is considered to be one of the six most abundant minerals in the earth's crust. It is the main mineral present in clays, found mainly in humid tropical climate soils. |wzx| kju| gkx| tbt| yue| cqw| rbh| ftf| kal| kwu| rzs| wul| sib| wpc| oel| rxo| dlp| neh| plq| owz| fow| znp| fqr| bwz| kej| hvq| pzs| uom| jwx| jxa| xlv| acs| nuq| uod| yfm| zbq| tvw| vsc| aff| bme| equ| hpr| hox| nck| wfn| bgg| scu| bqk| ukn| khf|