Hydrothermal syntheses of regularly interstratified minerals
نویسندگان
چکیده
منابع مشابه
Isothermal Treatments of Regularly Interstratified Montmorillonite-beidellite at Hydrothermal Conditions
-A glass in the intermediate composition of montmorillonite and beidellite, 50/50 in mole ratio, was treated under a hydrothermal pressure of 100 MPa, in the temperature range from 250 to 500~ and durations from 2 to 129 days. The phases identified in the products were plotted in a time-temperaturetransformation (TTT) diagram. The TTT diagram showed that the regularly interstratified montmorill...
متن کاملHydrothermal Syntheses of Amino Acid- Montmorillonites and Ammonium-micas
-An attempt has been made to synthesize nitrogenous clay minerals hydrothermally from silicaalumina gels in the presence of amino acids, namely glycine and lysine, The products have been characterized by X-ray powder diffraction, by analyses for C and N contents, and by their infrared spectra. Amino acid-montmorillonites have been prepared under hydrothermal conditions of 200-250~ and 1000 atm....
متن کاملPhase relations of some tungstate minerals under hydrothermal conditions
The binary phase relations ofseveral naturally-occurring tungstats mins14ls, ofthe general form M2*WOae w€t€ investigated hydrothermally at fluid pressure of 1.0 kbar and temperatures of 400o-900oc. A complete solid solution, with tetragonal symmetry, between scheelite (M2* Ca) and Stolzite (Pb) forms above725"C. The solvus is alnost symmetrical with a crest near CaorPbrr. The observed linear v...
متن کاملکانیشناسی رس خاکهای با مواد مادری گوناگون در پهنهی بینالود، غرب مشهد
The objective of this study was to investigate the clay mineralogy of soils derived from different parent materials in Binaloud zone, western Mashhad. Two soil profiles on the summit of granitic, ultrabasic and metamorphic rocks were described and sampled from genetic horizons. Clay fraction of the soils was analyzed using X-ray diffraction method. Chlorite, smectite, mica, amphibole and regula...
متن کاملSynthesis of Zeolites, Merlinoite Minerals of Damavand’s Natural Clinoptiloite Zeolites Mineral in Hydrothermal Conditions, under the Influence of Alkaline
In the present research synthesis of zeolites, merlinoite minerals of natural clinoptiloite mineral in the presence of alkaline mediums, was investigated. The analyzed variants are a result of a concentration of Na+ and K+ ions, temperature and time. Phase transition of clinoptiloite was conducted in the presence of an 8 molar potash solution (KOH) and a 4 molar soda solution (NaOH). Results in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Mineralogical Society of Japan
سال: 1979
ISSN: 1883-7018,0454-1146
DOI: 10.2465/gkk1952.14.special1_58