Results 11 to 20 of about 108 (92)

Analytical database of Martian minerals (ADaMM): Project synopsis and Raman data overview

Journal of Raman Spectroscopy, Volume 53, Issue 3, Page 364-381, March 2022., 2022
The Analytical Database of Martian Minerals (ADaMM) provides the scientific community with a comprehensive set of spectroscopic and diffractometric data collected from a wide collection of mineral phases relevant for Mars exploration. As much of the given data have been collected by analytical prototypes emulating the spectroscopic tools onboard ...
Marco Veneranda, Aurelio Sanz‐Arranz, Jose Antonio Manrique, Jesus Saiz, Clara Garcia‐Prieto, Elena Pascual‐Sánchez, Jesus Medina, Menelaos Konstantinidis, Emmanuel Lalla, Andoni Moral, Luis Miguel Nieto, Fernando Rull, Guillermo Lopez‐Reyes   +12 more
wiley   +1 more source

Ultrastructure of a Columbite‐Tantalite Mineral from the Zhaojinggou Ta‐Nb Deposit in the North China Craton: Direct Evidence of the Formation Mechanism of the Columbite‐Group Minerals

Geofluids, Volume 2022, Issue 1, 2022., 2022
The formation of columbite‐group mineral phases in peraluminous granite has not been demonstrated to date. Here, a nanoscale study of the columbite‐tantalite mineral in the Zhaojinggou Nb‐Ta deposit in North China Craton elucidated its formation mechanism and the role of fluids in Nb‐Ta mineralization. Transmission electron microscopy (TEM) analysis of
Yushan Zuo, Zhengxi Gao, Lei Zuo, Peng Zhang, Rui Liu, Qing Zhang, Tingting Zhang, Fan Yang   +7 more
wiley   +1 more source

Homogenization Experiments of Crystal‐Rich Inclusions in Spodumene from Jiajika Lithium Deposit, China, under Elevated External Pressures in a Hydrothermal Diamond‐Anvil Cell

Geofluids, Volume 2017, Issue 1, 2017., 2017
Extensive studies of the crystal‐rich inclusions (CIs) hosted in minerals in pegmatite have resulted in substantially different models for the formation mechanism of the pegmatite. In order to evaluate these previously proposed formation mechanisms, the total homogenization processes of CIs hosted in spodumene from the Jiajika pegmatite deposit in ...
Jiankang Li, I-Ming Chou, Daniel E. Harlov   +2 more
wiley   +1 more source

On Peculiarities of Propagation of a Plane Elastic Wave through a Gradient Anisotropic Layer

Advances in Acoustics and Vibration, Volume 2015, Issue 1, 2015., 2015
The problem of diffraction of a plane elastic wave by an anisotropic layer is studied. The diffraction problem is reduced to a boundary value problem for the layer. The grid method is used for solving the resulting boundary value problem. The diffraction of a plane longitudinal wave by the layer is considered.
Anastasiia Anufrieva, Dmitry Chickrin, Dmitrii Tumakov, Kim M. Liew   +3 more
wiley   +1 more source

MICAS FROM PEGMATITES OF THE ILMENY STATE RESERVE [PDF]

Минералогия, 2016
Most comprehensive review of micas from pegmatites of the Ilmeny State Reserve is presented. Correlation between the composition of micas and the type of pegmatite is shown. The data on evolution of micas from amazonite pegmatites are provided.
E.V. Belogub, M.A. Rassomakhin, V.A. Popov   +2 more
doaj  

INTERRELATIONS BETWEEN MINERAL BODIES IN FENITE HALO OF THE WESTERN CONTACT OF THE ILMENOGORSKY MIASKITE COMPLEX [PDF]

Минералогия, 2017
The northwestern contact of the Ilmenogorsky miaskite complex exhibits a succession of rocks from early banded meso- and melanocratic syenites to granosyenites and granites and further complex series of leucocratic syenites, carbonatites, syenitic and ...
V.A. Popov, V.A. Muftakhov
doaj  

Research on fine-grained classification of rare metal granite lithology based on deep learning

矿业科学学报
Fine-grained image classification has high research value and application prospects in practical applications. At present, the traditional lithology fine-grained classification method is highly subjective and time-sensitive, depending on the experience ...
ZHAO Hengqian, WANG Pan, LIU Zhiguo, MIAO Qunfeng, LI Zhibin, TANG Guanglong, QI Yunfei, XIE Yu, WANG Mengmeng   +8 more
doaj   +1 more source

Age and geochemical evolution of granite magmatism in Olkhon region from Caledonian syncollisional ore-free granite to the rare metal granite and pegmatite of Middle Paleozoic intraplate setting

China Geology
The detailed description of two granite complexes in the Olkhon subterrane is given. The Early Paleozoic Sharanur complex was formed by granitization of gneisses of the Olkhon series.
Viktor Antipin, Valentina Makrygina, Larisa Kushch, Nataliya Sheptyakova   +3 more
doaj   +1 more source

Spectral Identification Characteristics of Typical Rocks and Minerals in Alkali Feldspar Granite Type Nb-Ta Deposits in Central Inner Mongolia

Yankuang ceshi
Located in the central region of Inner Mongolia, within the southern segment of the Daxing’anling-North China Craton metallogenic belt, the area is notable for its widespread distribution of alkaline granite-type niobium-tantalum (Nb-Ta) deposits ...
Feicui WANG, Daming WANG, Xusheng LI, Bo ZHANG, Jialin WEI, Siqi CAO, Yunxiao TONG   +6 more
doaj   +1 more source

A Study on Amazonite, a Kind of Prehistoric Jade Artefacts in Korea [PDF]

Journal of the Mineralogical Society of Korea, 2013
우리나라를 비롯해 중국, 일본, 러시아 등 동북아시아에서는 선사시대의 장식용 옥기류가 출토되고 있다. 옥기의 출현은 원시 씨족사회에서 문명국가로 변천해 나가는 과정의 중요한 현상 중의 하나로 인식되고 있다. 따라서 옥기에 대한 연구는 한반도를 비롯한 동북아시아지역 선사시대 문화를 조명하는데 매우 중요하지만(Lim, 2003, 2012), 옥기에 대한 연구 진척은 다른 나라에 비해 열악한 실정이다. 청동기시대에는 다양한 옥기류가 사용되었고, 특히 남해안 중심의 청동기 유적지에서 출토된 장식용 옥기류, 즉 식옥(飾玉)에 대한 연구 결과를 보면 그 재질을 대부분 천하석(天河石)으로 규정하고 약간의 벽옥도 포함시키고 있다(Choi ...
Yong-Joo Jwa, Yuri Kim, Young Jin Song, Hyen Goo Cho   +3 more
openaire   +1 more source