Appearance of infrared (MgMgFe3+)-OH stretching band in heat-treated holmquistites, sodic-calcic and sodic amphiboles.
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چکیده
منابع مشابه
The compositional variation of synthetic sodic amphiboles at high and ultra-high pressures
Sodic amphiboles in high pressure and ultrahigh pressure (UHP) metamorphic rocks are complex solid solutions in the system Na2O±MgO±Al2O3±SiO2± H2O (NMASH) whose compositions vary with pressure and temperature. We conducted piston-cylinder experiments at 20±30 kbar and 700±800 °C to investigate the stability and compositional variations of sodic amphiboles, based on the reaction glaucophane 2...
متن کاملBone repair in rats treated with sodic diclofenac and calcitonin.
PURPOSE To investigate clinical and histologically the bone repair in treated animals with calcitonin and sodic diclofenac. METHODS Ninety-six femoral defects were created in forty-eight animals distributed in four groups (n=24): either left untreated, treated with the sodic diclofenac or calcitonin or both. Follow-up was 7, 14 and 21 days. Histological sections stained by haematoxylin-eosin ...
متن کاملخصوصیات نوری، ترکیب شیمیایی و نحوه تشکیل آمفیبول‌های سدیک و سدیک – کلسیک بی رنگ در پیه مونتیت – کوارتز شیست‌های بخش مرکزی شیکوکو از نوار دگرگونی فشار بالا – دمای پائین سانباگاوا واقع در جنوب غربی ژاپن
Colorless sodic and sodic-calcic amphiboles occur in piemontite-quartz schists in the Asemi-gawa (garnet zone) and Besshi (albite-biotite zone) areas of high P-low T Sanbagawa metamorphic belt in central Shikoku, Japan. Colorless sodic amphiboles in the Asemi-gawa area are glaucophane while colorless sodic-calcic amphiboles from the Besshi area are barroisite and magnesiokatophorite. Colorless ...
متن کاملSodic soil reclamation: Modelling and field study
Reclamation of sodic soils has traditionally been undertaken using calculation of gypsum or Ca requirement assuming 100% exchange efficiency and neglect of the contribution of calcium carbonate in the profile. The UNSATCHEM model is reviewed and then evaluated for its ability to predict field reclamation of a sodic saline soil. The 40-ha field site was initially at an electrical conductivity (E...
متن کاملRunoff and Interrill Erosion in Sodic Soils Treated with Dry PAM and Phosphogypsum
Seal formation at the soil surface during rainstorms reduces rain infiltration and leads to runoff and erosion. An increase in soil sodicity increases soil susceptibility to crusting, runoff, and erosion. Surface application of dissolved polyacrylamide (PAM) mixed with gypsum was found to be very effective in decreasing seal formation, runoff, and erosion. The objective of this study was to inv...
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ژورنال
عنوان ژورنال: Mineralogical Journal
سال: 1999
ISSN: 1881-4174,0544-2540
DOI: 10.2465/minerj.21.157