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Enst: enstatite; Qz: quartz; Mul: mullite; Cris: cristobalite; Hem: Hematite; Anor: anorthite.

Influencia de las materias primas y de la tecnica de moldeo en la fabricacion de productos ceramicos tipo gres

Substance Heating rates/ (chemical composition) ([degrees]C/min) Room 5 10 20 temperature Quartz 10.80 4.00 4.20 3.20 (Si[O.sub.2]) (%) Kaolinite ([Al.sub.2][Si.sub.2] 11.60 0 0 0 [O.sub.5][(OH).sub.4]) (%) Microcline (KAl[Si.sub.3] 4.50 2.70 5.10 3.30 [O.sub.8]) (%) Anorthite (Ca[Al.sub.2] 73.00 93.30 90.70 93.50 [Si.sub.2][O.sub.8]) (%) Calcium carbonate 0 0 0 0 (CaC[O.sub.3]) (%) Substance Heating rates/ (chemical composition) ([degrees]C/min) 30 40 50 Quartz 1.80 11.50 7.50 (Si[O.sub.2]) (%) Kaolinite ([Al.sub.2][Si.sub.2] 0 0 0 [O.sub.5][(OH).sub.4]) (%) Microcline (KAl[Si.sub.3] 3.70 6.50 29.70 [O.sub.8]) (%) Anorthite (Ca[Al.sub.2] 94.50 80.10 60.90 [Si.sub.2][O.sub.8]) (%) Calcium carbonate 0 1.90 1.90 (CaC[O.sub.3]) (%)

Effects of Heating Rate on the Dynamic Tensile Mechanical Properties of Coal Sandstone during Thermal Treatment

The chemical heterogeneity of plagioclase is also manifested in marked core to rim zoning patterns within a single crystal (e.g., anorthite from [An.sub.61] to [An.sub.10]).

Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas

Mole transfers of the reactive phases in mmol [L.sup.-1] Mole Reactive phase Chemical formula transfer Ca[X.sub.2] Ca[X.sub.2] -3.934 Mg[X.sub.2] Mg[X.sub.2] 1.965 NaX NaX 3.938 KX KX 0.000 [CH.sub.4(g)] [CH.sub.4(g)] -1.401 C[0.sub.2(g)] C[O.sub.2(g)] 4.781 Sulfur S 1.868 Albite NaAI[Si.sub.3[O.sub.8] -2.315 Anorthite Ca[Al.sub.2][Si.sub.2][O.sub.8] 3.748 K-feldspar [Kal.sub.3][Si.sub.3][0.sub.8] 2.315 K-mica [Kal.sub.3][Si.sub.3][O.sub.10][(OH).sub.2] -2.499

Salinization mechanisms of a small alluvial aquifer in the semiarid region of northeast Brazil/Mecanismos de salinizacao de um pequeno aquifero aluvial localizado no semiarido do Nordeste brasileiro

Anhydrite, sillimanite, corundum, hematite, and anorthite were also identified in small concentrations (less than 1%).

Coal fly ash ceramics: preparation, characterization, and use in the hydrolysis of sucrose

The phase composition of the samples of ceramic tiles is represented mainly by quartz, anorthite and a small amount of hematite and almost the same for all investigated compositions.

Researches in the field of producing ceramic tiles of lower material capacity for interior wall facing

Lignite Giral samnple 2 Table 1 Mineral matter % present Quartz (Si[O.sub.2]) 1.2 Anorthite 3.0 Diopside 2.5 Maghemite 3.9 Hematite 10.5 Anhydrite 78.4 Hexahydrite 0.5 Total 100.0

Influence of sorbent characteristics on fouling and deposition in circulating fluid bed boilers firing high sulfur Indian lignite

2) the formation of CA[S.sub.2] (anorthite) was identified (Fig.

Influence of fibres content on performance parameters of refractory Concrete/Plauso kiekio itaka ugniai atspariu betonu ekspoatacinems savybems

However, quartz, feldspar (such as albite/ anorthite), several clay minerals (such as micas and illites, chamosite, chlorites, kaolinite and biotite), bayerite and calcite were common in sediment samples.

Spatial distribution of major, some trace and rare earth elements and mineralogy of sediments of Buriganga River, Bangladesh

One of the Chandrayaan 1's findings, reported in September 2009, was a confirmation of the mineral anorthite, rich in calcium plagioclase.

Confusion over space