Results 21 to 30 of about 4,305 (211)
A chromian tourmaline from Outokumpu, Finland [PDF]
Bulletin of the Geological Society of Finland, 1968 Chromian tourmaline, a member of the dravite group, has been encountered in the Cr-bearing skarns occuring between the serpentinites and quartzites in the Outokumpu area, in association with chrome-bearing silicates ang oxides.
E. Peltola, Y. Vuorelainen, T.A. Häkli
doaj +1 more source
Preparation and Photocatalytic Activity of Nitrogen-doped Nano TiO2/Tourmaline Composites
Cailiao gongcheng, 2016 Using Ti(OC4H9)4 as precursor, CO(NH2)2 as nitrogen source, tourmaline as support, the nitrogen-doped nano TiO2/tourmaline composites were synthesized by sol-gel method with ultrasound assisted.The structure and performance of composites were ...
LIU Xin-wei +3 more
doaj +1 more source
Epigenetic gold occurrence in a Paleoproterozoic meta-evaporitic sequence in the Rompas-Rajapalot Au system, Peräpohja belt, northern Finland [PDF]
Bulletin of the Geological Society of Finland, 2018 The Rompas-Rajapalot gold prospect is located in the northern part of the Paleoproterozoic Peräpohja belt. It covers an area of at least 10 x 10 km and comprises various styles of gold mineralization ranging from localized high-grade Au pockets in ...
Ranta, J.-P. +3 more
doaj +1 more source
The spectrophotometric determination of boron in tourmalines [PDF]
Journal of the Serbian Chemical Society, 2005 A procedure for the spectrophotometric determination of macro amounts of boron in tourmaline with azomethine H is described. The used tourmaline concentrate was obtained by magnetic separation and heavy-liquids purification of the schorl zone of ...
Jakšić Ljiljana N.
doaj +3 more sources
The Preparation and Characterization of Tourmaline-Containing Functional Copolymer p (VST/MMA/BA)
Journal of Spectroscopy, 2018 Tourmaline was modified with vinyl triethoxysilane containing double bond to prepare the polymerizable organic vinylsiliconoxyl tourmaline (VST) and then copolymerized with methyl methacrylate (MMA) and butyl acrylate (BA) to produce the tourmaline ...
Yingmo Hu +5 more
doaj +1 more source
Drug Targeting Model of Composite Gold-Tourmaline for Cells Enhancing Applications
Nano Biomedicine and Engineering, 2015 The drug delivery and targeting method of gold tourmaline composite atoms generated by optical tweezers in a micro-optical device system is proposed.
Preecha P. Yupapin, Senee Suwandee
doaj +1 more source
Geologica Acta, 2022 Geostatistical and multivariate statistical analyses were applied to heavy mineral data from an Amazonian fluvial-lake system near the Tapajós River mouth to investigate the spatial distribution and source-area of sediments.
Anne Caroline S. Ribeiro +5 more
doaj +1 more source
American Journal of Preventive CardiologyTherapeutic Area: Pharmacologic Therapy Background: Subgroups of patients with atherosclerotic cardiovascular disease (ASCVD) remain at very high risk of major adverse cardiovascular and limb events despite lifestyle modification and intensive ...
Emil DeGoma, MD
doaj +1 more source
Yankuang ceshi, 2017 Tourmaline is an efficient tracer during diagenesis and metallogenesis. Chemical composition of tourmaline can not only be used to give information about environment of diagenesis and metallogenesis, but can also be useful in prospecting.
HOU Jiang-long +5 more
doaj +1 more source
Common misconceptions in crystallography and crystal optics
Journal of Applied Crystallography, EarlyView.Six recurrent misconceptions in crystallography, some involving mineral and crystal optics, are analyzed and discussed. The explanation of these and similar misconceptions could serve as educational resources for teachers.Did you know that an X‐ray diffraction pattern is not a spectrum?
Lluís Casas
wiley +1 more source