Results 101 to 110 of about 1,737 (200)

Geologists of Russian origin in Latin America [PDF]

, 2018
Se describe la vida y trayectoria de geólogos que más allá de su nacionalidad (rusa, ucraniana, tártara, alemana, etc.), nacieron en territorios que pertenecieron al Imperio Ruso, la Unión Soviética o la Federación Rusa, y de sus descendientes graduados ...
Alonso, Ricardo, Boltovskoy, Demetrio, Charrier González, Reynaldo, Durand Delga, Michel, Minina, Elena, Riccardi, Alberto Carlos, Tchoumatchenco, Platon, Wiasemsky, Michel   +7 more
core   +1 more source

Gemological Abstracts [PDF]

Gems & Gemology, 1986
openaire   +2 more sources

Controllable crystal form transformation and luminescence properties of up-conversion luminescent material K₃Sc_0.5Lu_0.5F₆: Er³⁺, Yb³⁺ with cryolite structure. [PDF]

RSC Adv, 2021
Yan Z, Guo Q, Liao L, Shuai P, Huang F, Mei L.   +5 more
europepmc   +1 more source

Changing Hydrocarbon-Producing Potential of the Cambrian Niutitang Shale: Insights from Pyrite Morphology and Geochemical Characteristics. [PDF]

ACS Omega, 2023
Wang X, Zhang J, Shi M, Pang Y, Zhao Y, Yang X.   +5 more
europepmc   +1 more source

Inclusions, Chemical Composition, and Spectral Characteristics of Pinkish-Purple to Purple Spinels from Mogok, Myanmar

Crystals
With the increasing market demand for spinels of various colors, purple spinel—long regarded as a symbol of nobility—has attracted growing attention. In this study, pinkish-purple to purple spinels from the Mogok region of Myanmar were systematically ...
Danyu Guo, Geng Li, Liqun Weng, Meilun Zhang, Fabian Dietmar Schmitz   +4 more
doaj   +1 more source

Origin of Color and Spectral Characteristics of Nanhong Agate from Northeast Yunnan, China

Crystals
Nanhong agate has attracted public attention as the most distinctive gemstone in China. Owing to the limited data on Nanhong agates from a new production area in northeastern Yunnan, this paper presents the first data from gemological studies on these ...
Qiuyun Song, Liurunxuan Chen, Ruohan Zuo, Xianchao Chen, Sugang Sui, Wenzhou Pu, Xiaoqi Yang, Shitao Zhang, Wenlian Liu   +8 more
doaj   +1 more source

Formation Mechanism and Gemological Characteristics of “Yellow-Skinned” Nanhong Agate in Northeastern Yunnan, China: Evidence from Mineralogy and Geochemistry

Crystals
The “yellow-skinned” Nanhong agate represents a unique variety of Nanhong agate found in northeastern Yunnan, China, and it is highly valued for its distinctive yellow exterior and clear red–yellow interface. Owing to the limited research on this variety,
Qiuyun Song, Shitao Zhang, Wenzhou Pu, Liurunxuan Chen, Ruohan Zuo, Xianchao Chen, Dai Zhang, Wenlian Liu   +7 more
doaj   +1 more source

Special Libraries, July-August 1951 [PDF]

, 1950
Volume 42, Issue 6https://scholarworks.sjsu.edu/sla_sl_1951/1005/thumbnail ...
Special Libraries Association
core   +2 more sources

Crystal structure of 4-((triphenylphosphonio)methyl)pyridin-1-ium octachlorodiantimonate, C24H22Cl8NPSb2

Zeitschrift für Kristallographie - New Crystal Structures
C24H22Cl8NPSb2, monoclinic, P21/c (no. 14), a = 15.1990(7) Å, b = 11.5811(6) Å, c = 18.9229(9) Å, β = 97.472(2)°, V = 3302.5(3) Å3, Z = 4, Rgt(F) = 0.0351, wRref(F2) = 0.0764, T = 287.0 K.
An Mei, Zhang Liqian, Wang Lixian, Bian Shaosha, Yang Jiachen, Liu Bin   +5 more
doaj   +1 more source

Structure and luminescence properties of a novel broadband green-emitting oxyapatite-type phosphor. [PDF]

RSC Adv, 2020
An N, Xu F, Guo Q, Liao L, Mei L, Liu H.
europepmc   +1 more source