Results 61 to 70 of about 941 (201)
Material Profiling of Mesopotamian Cylinder Seals by Raman Spectroscopy
Journal of Raman Spectroscopy, Volume 56, Issue 3, Page 228-242, March 2025.Mesopotamian cylinder seals (fourth ‐ first millennium bce) from the collection of Museum für Kunst und Gewerbe, Hamburg were non‐destructively studied by Raman spectroscopy were non‐destructively studied by Raman spectroscopy. The Raman spectral analysis identified the mineral constituents and quantitatively determined the chemical compositions of the
Stylianos Aspiotis +5 more
wiley +1 more source
Геолого-геммологические критерии оценки качества жильного кварца [PDF]
, 2011 Представлены результаты исследований геммологических характеристик различных генетических типов жильного кварца Среднеприднепровского и Приазовского мегаблоков Украинского щита, перспективного как камнесамоцветное сырье.Представлено ...
Цоцко, Л. И. +2 more
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Tectonics and crustal evolution [PDF]
, 2016 We thank the Natural Environment Research Council (grants NE/J021822/1 and NE/K008862/1) for funding.The continental crust is the archive of Earth's history.
Cawood, Peter A. +2 more
core +4 more sources
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 3, March 2025.Abstract Estimating the equilibration temperatures of mantle‐derived garnets is crucial for assessing the diamond potential of kimberlites. Traditional garnet geothermometers require co‐existing mineral data or costly trace element analysis, limiting their practical use.
Qiwei Zhang +6 more
wiley +1 more source
Yankuang ceshi, 2023 BACKGROUND The emerald is loved by people because of its gorgeous color and is respected as one of the world's four major gems. Due to the high value of emeralds, a variety of synthesis and optimization methods have emerged.
ZHU Hongwei +8 more
doaj +1 more source
Влияние палеорельефа на формирование механических ореолов рассеивания хромитовой минерализации в Среднем Побужье [PDF]
, 2011 Приведены результаты исследования влияния форм палеорельефа хромитоносных ультрабазитов Побужья на формирование и распространение экзогенных хромитовых руд.
Перков, Е. С. +2 more
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Definition of a genetic model for the dark-colored overgrowths in pegmatitic gem tourmaline crystals [PDF]
, 2023 Elba gem tourmalines are renowned for the delicate pastel colors and the perfection of their crystal shapes in small size. Characteristic for these tourmalines is the presence of color anomalies that occur as dark-colored terminations, frequently at the ...
ALTIERI, ALESSANDRA
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Gemological features of diaspore in sodra—Milas (mugla) region [PDF]
, 2023 Diaspore, is related to bauxite in terms of its formation mechanism. Diaspore is one of the gemstone quality stones used in jewelry and jewelry making. It is possible to come across gemstones in various regions of the world.
Alican Ozturk, Eyyüp Hikmet Kinaci
core +1 more source
Geostandards and Geoanalytical Research, Volume 48, Issue 3, Page 637-660, September 2024.Key Points New set of widely available reference materials, for in situ measurement of volatile elements (H2O, CO2, S, Cl, F) in silicate glass of basaltic composition. Characterised using ERDA, NRA, EA, FTIR and EPMA, and SIMS on four different ion probes. SIMS CO2 measurement results are significantly influenced by the H2O content of the glass.
Yves Moussallam +17 more
wiley +1 more source
Известия высших учебных заведений: Геология и разведка, 2023 Background. Along with ammonites and septaries, concretions with fossils are increasingly being used as jewelry and ornamental materials in Russia. Such concretions are characterized by a wide range of sizes, as well as high decorative and technological ...
D. A. Petrochenkov, E. Yu. Baraboshkin
doaj +1 more source