Results 31 to 40 of about 10,401 (241)

Pyroxene thermometry of rhyolite lavas of the Bruneau–Jarbidge eruptive center, Central Snake River Plain

, 2009
The Bruneau–Jarbidge eruptive center of the central Snake River Plain in southern Idaho, USA produced multiple rhyolite lava flows with volumes of
Nash, Barbara P., Cathey, Henrietta E.
core   +1 more source

Anisotropy study of multiferroicity in the pyroxene NaFeGe2O6

New Journal of Physics, 2015
We present a study of the anisotropy of the dielectric, magnetic and magnetoelastic properties of the multiferroic clinopyroxene NaFeGe _2 O _6 . Pyroelectric currents, dielectric constants and magnetic susceptibilities as well as the thermal expansion ...
M Ackermann, L Andersen, T Lorenz, L Bohatý, P Becker   +4 more
doaj   +1 more source

​40Ar/39Ar geochronology of terrestrial pyroxene

, 2018
Geochronological techniques such as U/Pb in zircon and baddeleyite and 40Ar/39Ar on a vast range of minerals, including sanidine, plagioclase, and biotite, provide means to date an array of different geologic processes.
Ware, B., Fred Jourdan, Jourdan, Fred, Bryant Ware   +3 more
core   +1 more source

KIMBERLITE-LIKE ROCKS OF THE URIK-IYA GRABEN, EASTERN SAYAN REGION: MINERAL COMPOSITION, GEOCHEMISTRY AND FORMATION CONDITIONS

Геодинамика и тектонофизика, 2020
The study of the Bol’shaya Tagna alkaline-carbonatite massif and adjacent areas was focused on the mineral and chemical compositions of minerals, the distribution of petrogenic and trace elements in pyroxene-free alkaline picrites in veins and dikes ...
V. B. Savel'eva, Yu. V. Danilova, E. P. Bazarova, B. S. Danilov   +3 more
doaj   +1 more source

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Preparation of High Strength Ceramic Materials from Titanium-bearing Blast Furnace Slags

Kuangchan zonghe liyong
This is an article in the field of mineral materials. In order to explore the large-scale and high-value application of titanium-containing blast furnace slags in the ceramic field, through the design based on CaO-SiO2-MgO(15%)-Al2O3 phase diagram, and ...
Shuqin LI, Shaoguang HUA, Xiangmei LI, Dejian PEI, Daya WANG   +4 more
doaj   +1 more source

Application of X-ray Diffraction, X-ray Fluorescence Spectrometry and Electron Microprobe in the Identification of Basalt

Yankuang ceshi, 2015
Basalt identification is usually performed by microscope, so the appraisal results are easily influenced by personal professional level and subjective factors.
XU Nai-cen, SHEN Jia-lin, ZHANG Jing
doaj   +1 more source

Lunar Terrestrial Analog Experiment on the Spectral Interpretations of Rocks Observed by the Yutu-2 Rover

Remote Sensing, 2022
A visible and near-infrared imaging spectrometer (VNIS) loaded by the Chang’e-4 rover is the primary method for detecting the mineral composition of the lunar surface in the landing region.
Rui Chang, Wei Yang, Honglei Lin, Rui Xu, Sheng Gou, Rong Wang, Yangting Lin   +6 more
doaj   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Pyroxenes: a new class of multiferroics [PDF]

Journal of Physics: Condensed Matter, 2007
Pyroxenes with the general formula $AM$Si$_2$O$_6$ ($A$ = mono- or divalent metal, $M$ = di- or trivalent metal) are shown to be a new class of multiferroic materials. In particular, we have found so far that NaFeSi$_2$O$_6$ becomes ferroelectric in a magnetically ordered state below $\simeq 6$ K. Similarly, magnetically driven ferroelectricity is also
Jodlauk, S., Becker, P., Mydosh, J. A., Khomskii, D. I., Lorenz, T., Streltsov, S. V., Hezel, D. C., Bohaty, L.   +7 more
openaire   +2 more sources