Detail of "7440-65-5"

Reference

Yttrium oxide micro powder

Yttrium oxide micro powder.Some chemicals with cas registry numbers like 1314-36-9 and 10361-93-0 are also used. (Agency of Industrial Sciences and Technology; Nippon Kagaku Togyo K. K., Japan). Jpn. Kokai Tokkyo Koho JP 58223619 A2 26 Dec 1983 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C01F017-00. APPLICATION: JP 82-102603 14 Jun 1982. DOCUMENT TYPE: Patent CA Section: 49 (Industrial Inorganic Chemicals) Aq. Y(NO3)3, optionally contg. Nd and/or Eu nitrate, is neutralized with aq. NH3 and heated at pH 5-8, mixed with org. solvent (C4 alc., ester, or polyethylene glycol), heated to b.p. to 387%, the sepd. aq. phase [or the Y(OH)3 cake is mixed, heated, and sepd.] is dried, and calcined at 400-1000°. Thus, 10 g Y(NO3)3 in 20 mL HNO3 was adjusted with aq. NH3 to pH 6.5 and heated at 100° for 24 h, mixed with 500 mL octanol, distd. until the temp. was 110°, the aq. phase was dried at 80°, and calcined at 600° for 1 h. The product was 9.9 g Y2O3 with an av. diam. of 0.02 m. .

Minette inclusions in the rhyodacitic lavas of Mt

Minette inclusions in the rhyodacitic lavas of Mt. Amiata (central Italy): mineralogical and chemical evidence of mixing between Tuscan and Roman type magmas. Van Bergen, Manfred J.; Ghezzo, Claudio; Ricci, Carlo Alberto (Inst. Earth Sci., State Univ. Utrecht, Utrecht 3584 CD, Neth.). J. Volcanol. Geotherm. Res., 19(1-2), 1-35 (English) 1983.There are some reagents with their cas registry numbers 7440-65-5 and 7440-24-6 are used in this study. CODEN: JVGRDQ. ISSN: 0377-0273. DOCUMENT TYPE: Journal CA Section: 53 (Mineralogical and Geological Chemistry) Major-element, trace-element, and mineral data are reported for a series of mafic minette inclusions (MI) occurring in the rhyodacitic lavas of Mt. Amiata, a volcanic complex belonging to the Tuscan Magmatic Province. The MI form, together with some subordinate mafic latitic lavas and the host rock rhyodacites, a continuous series, which varies from olivine- and minor nepheline-normative to quartz, hypersthene- and corundum-normative rock-types with 48-67% SiO2. All of the rocks are characterized by high contents of K (5-6% K2O) and many trace elements, esp. the incompatible elements. Following straight-line correlation trends, Al, Fe, Mg, Ca, Ti, P, Sr, and Ba decrease with increasing SiO2, whereas Na and Li increase, and K, Rb, Zr, La, Ce, Nb, and Y remain virtually const. The primary mineral assemblage of the MI consists of diopsidic pyroxene, forsteritic olivine, and mica. The compn. of the xenocrysts is identical to that of the phenocryst assemblage in the rhyodacites. The latitic lavas are rich in xenocrysts and differ from the minettes mainly by the absence of primary mica. The data strongly suggest a magma mixing origin for the minettes, latites, and possibly part of the rhyodacites. Injection of mafic magma into a siliceous magma chamber resulted in the formation of hybrid inclusions and a latitic magma that could only reach the surface after eruption of the voluminous rhyodacitic lavas. The rhyodacites which erupted early and are slightly richer in SiO2 than most of the other rhyodacites represent the acid mixing component, whereas the mafic end-member has close affinities to the potassic alk. lavas of the adjacent Roman Province. The MI have the modal compn. of a minette and this implies that volatiles were important constituents of the hybrid magmas. This may be attributed to the primary character of the Roman-type end-member involved, or explained by a process of selective enrichment operating during mixing. Although upper mantle derived Roman magmas have interacted with Tuscan magmas of crustal anatectic origin at Mt. Amiata and probably other volcanic centers in central Italy, the specific chem. of lavas in both provinces cannot be explained by simple mixing of the magmas in shallow chambers. .