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Showing 1 to 12 of 12 for “"sodalite"”.
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Halogen-element (F, Cl, and Br) behaviour in apatites, scapolite, and sodalite : an experimental investigation with field applications
… melts and the uptake of Br by scapolite and sodalite. Twenty-nine partitioning experiments between fluorapatite (FAP) /chlorapatite (ClAP) and coexisting melts were conducted in the system of CaO-P2O5-CaF2-CaCl2–NaBr at 1120 degree C to 1400 degree C and atmospheric pressure. The partition …
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Petrogenesis of the Mesoproterozoic anorthosite, syenite and carbonatite suites of NW Namibia and their contribution to the metasomatic formation of the Swartbooisdrif sodalite deposits
… led to the formation of economically important sodalite deposits. Investigated anorthosite samples display the magmatic mineral assemblage of Pl (An37-75) ± Ol ± Opx ± Cpx + Ilm + Mag + Ap ± Zrn. Ilmenite and pyroxene are surrounded by narrow reaction rims of biotite and pargasite. During the …
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High throughput optical materials
… were optimised for the formation of analcime, sodalite, zeolite A and faujasite. All materials were characterised using powder x-ray diffraction.<br/>The thermal conversion of zeolite A and sodium chloride into sodalite has been studied using combined TGA and DTA analysis and time resolved …
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Petrology and Geochemical Evolution of the East Hill Suite of the Mont Saint-Hilaire Alkaline Plutonic Complex
… are important and present in abundant secondary sodalite and pervasive microsulfides. Mineral geochemistry indicates decreasing oxygen fugacity with cooling, and phases such as titanite (present) and aenigmatite (absent) defined boundaries in fO2 – T space. Oxygen fugacity data combined with …
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Petrology of the Cenozoic phonolites and related rocks of the Houston Creek area, Bear Lodge Mountains, Wyoming
… phonolite porphyry, trachyte porphyry, sodalite-bearing phonolite and altered felsite. These hypabyssal rock types are characterized by porphyritic volcanic textures and trachytic to pilotaxitic fabrics. They contain phenocrysts of sanidine, aegirine-augite, hauyne, sodalite, orthoclase, …
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Fluid evolution in the nepheline syenites of the Ditrău Alkaline Massif, Transylvania, Romania
… alteration of nepheline to secondary minerals as sodalite, cancrinite and analcime. Fluid inclusion studies in nepheline, aegirine, albite and cancrinite provide evidence for the role of highly saline fluids in incongruent transformation reactions by which sodalite, cancrinite and analcime …
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Ionothermal Synthesis of High Silica Zeolites in Deep Eutectic Solvents (DES)
… and organic structure-directing agent (SDA). Sodalite and ZSM-39 were prepared in tetramethylammonium chloride (TMACl)/1, 6-hexanediol by using the mineralizing agents NaOH and NH4F, respectively. In urea/choline chloride, ZSM-5, Beta, ZSM-39, and ZSM-11 were made by using different organic …
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Petrology and geochemistry of syenite intrusions in the Eastern Province of Zambia
… bearing types and undersaturated nepholine-sodalite varieties.The ,Sinda syenite intrusions are oversaturated potassics which form a petrogenetically related N-S trending string of intrusions at the eastern margin of the Sinda batholith.The northernmost Lusandwa intrusion is a composite …
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High temperature studies of sodalites
Aluminosilicate sodalites Na\(_8\)(Al\(_6\)Si\(_6\)O\(_2\)\(_4\))Br\(_2\), Na\(_8\)(Al\(_6\)Si\(_6\)O\(_2\)\(_4\)Cl\(_2\), and Na\(_8\)(Al\(_6\)Si\(_6\)O\(_2\)\(_4\))I\(_2\), were synthesised and subsequently loaded with various amounts of silver by aqueous ion exchange to produce …
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The crystal chemistry of tetrahedrite
… the structure to be generally analogous to sodalite, i.e., a framework of comer-connected M(l)Y4 tetrahedra containing an ZM(2)₆ octahedron rather than an interframework cation or anion. Framework rotation (¢) is increased by increases in the M(1)—Y and X—Y bond lengths, but decreased by …
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Synthesis of Zr4+/Ag+ metal oxides modified zeolite for application in fluoride and pathogens removal from water
… higher temperatures and times led to hydroxy sodalite mineral phases. Preliminary defluoridation experiments were conducted on all hydrothermally treated samples, with the sample prepared at 2 hours sonication, 105°C hydrothermal treatment, and 1 hour 30 minutes exhibiting a capacity for …
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Synthesis of zeolites from geological materials and industrial wastes for potential application in environmental problems
… in NaOH solutions included zeolite LTA (LTA), sodalite (SOD), cancrinite (CAN), faujasite (FAU), zeolite Na-P1 (GIS), JBW-type zeolite (JBW), analcime (ANA), whereas the activation of KAO in KOH solutions produced chabazite (CHA), zeolite Barrer-KF, phillipsite (PHI) and K-feldspar. The …