Results 31 to 40 of about 208,716 (378)
The Mineralogy of Scotland [PDF]
Nature, 1901 NO book is of more use to the practical mineralogist and collector than one which describes in a detailed manner the mineral localities of a country. Among the best examples are the lexicon of Zepharovich and Becke for Austria; that of Frenzel for Saxony; and, on a much more elaborate scale, the treatise by Lacrox on the mineralogy of France and her ...
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Numerical simulation of zonal disintegration of surrounding rock in the deep‐buried chamber
Deep Underground Science and Engineering, Volume 1, Issue 2, Page 174-182, December 2022., 2022 Based on the finite difference software FLAC3D, the numerical simulation of cavern surrounding rock under different working conditions was carried out by using Bilinear Strain‐Softening Ubiquitous‐Joint Model (Subi). The effects of buried depth, cohesion and internal friction angle of surrounding rock on the discontinuous deformation are analyzed, and ...
Yukai Wang, Xiaoli Liu, Yanlin Xiong
wiley +1 more source
Deep Underground Science and Engineering, Volume 1, Issue 2, Page 131-137, December 2022., 2022 General plan of the in‐situ experiment (WNS) base. Abstract This paper introduces the establishment of deep underground infrastructure for science and engineering research. First, the representative deep underground research laboratories and facilities in the world and their functions were summarized and reviewed.
Lihua Hu +5 more
wiley +1 more source
KENYAITE AND MAGADIITE IN THE SOUTHERN URALS [PDF]
Минералогия, 2017 White dense kenyaite (Na2 Si22O41(OH)8 • 6H2 O) nodules were found by enthusiasts in dumps of exploration mines of the Rechnoe cacholong occurrence in the Adamovsky district of the Orenburg region.
M.V. Shtenberg +4 more
doaj
Deep Underground Science and Engineering, Volume 1, Issue 2, Page 148-164, December 2022., 2022 We conducted a new approach of mine water‐deep geological storage, the results showed that the hydrogeological feasibility of Baotashan coarse sandstone (BCS) was impressive and useful for real project. The effective porosity of BCS aquifers ranged from 1.36% to 3.46% and the capacity of mine water geological storage was 0.455–1.266 Mm3 for 1 km2 in ...
Ge Chen, Yajun Sun, Zhimin Xu, Xin Li
wiley +1 more source
VOLBORTHITE AND STRENGITE – RARE MINERALS FROM THE MEDNORUDYANSKOE MALACHITE DEPOSIT (URALS) [PDF]
Минералогия, 2015 History of volborthite and strengite findings in Russia and the World is discussed. The chemical composition of these minerals from the Mednorodyanskoe deposit, as well as morphology of volborthite crystals, X-ray pattern of strengite and its IR spectrum
V.I. Popova +4 more
doaj
Contributions to mineralogy [PDF]
American Journal of Science, 1887 n ...
Hidden, W. E., Washington, H. S.
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Coal rock image recognition method based on improved CLBP and receptive field theory
Deep Underground Science and Engineering, Volume 1, Issue 2, Page 165-173, December 2022., 2022 In view of the evident differences between coal and rock in visual attributes such as color, gloss, and texture, the complete local binary pattern (CLBP) image feature descriptor is introduced for coal and rock image recognition, and the original algorithm oversimplifies local texture features by ignoring imaging information from higher‐order pixels ...
Chuanmeng Sun +4 more
wiley +1 more source
MICROINCLUSIONS OF PGM MINERALS IN ANCIENT GOLD PRODUCTS: OCCURRENCE, COMPOSITION, ALTERATION [PDF]
Минералогия, 2015 The PGM microinclusions in ancient gold products from the Urals, Siberia, Azov region and Turkmenistan are compared with similar inclusions from the Middle East artifacts. Microinclusions were found in the archaeological sites, which are located close to
V.V. Zaykov +5 more
doaj
, 1997 This resource is a 43 page pdf document on the principals of optical mineralogy. Topics include light, the polarizing light microscope, the refractive index, optical classes and indicatrix theory, the relationship of optical properties to crystal ...
Mickey Gunter
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