Summary The crystal structures of lower mantle minerals are vital components for interpreting geophysical observations of Earth's deep interior and in understanding the history and composition of this complex and remote region. While bridgmanite, ferropericlase, and Calcium silicate (CaSiO 3 ) ...
Ye, Y. Hydration effects on crystal structures and equations of state for silicate minerals in the subducting slabs and mantle transition zone.Sci. China Earth Sci.59, 707–719 (2016). https://doi.org/10.1007/s11430-015-5260-x Download citation Received30 August 2015 Accepted07 December 2015...
The crystal structures of seventeen natural Mg–Fe olivines from nine rock specimens of seven different rock types were refined by X-ray diffraction method. Intensity data of the two olivines were also obtained at high temperatures ranging from 200°C to 700°C. The site occupancy...
Gruner, The crystal structures of talc and pyrophyllite. Z... Gruner,W John - Zeitschrift für Kristallographie - Crystalline Materials 被引量: 115发表: 1934年 Temperature dependence of IR absorption of hydrous/hydroxyl species in minerals and synthetic materials Ling WangCollege of Materials and ...
Simple crystal structures are usually named after the compounds in which they were first discovered (diamond or zinc sulfide, cesium chloride, sodium chloride, and calcium fluoride). Many compounds of the types A+X-and A2+X2-have such structures. They are highly symmetrical, the unit cell is...
Interestingly, as all minerals form crystals, not all crystals are minerals. Minerals are inorganic with crystalline structures, so when a crystal is formed unnaturally or inorganically that crystal is not a mineral. For example,man-made crystalsare not considered minerals, just as sugar is an or...
Its crystal structure may allow it to replace silicon in silicate minerals. 其晶體結構特殊,有可能能夠取代硅酸鹽礦物中的硅。 WikiMatrix This was the first crystal structure of any form of DNA. .这是任何形式的脱氧核糖核酸(DNA)的第一个晶体结构。 LASER-wikipedia2 The crystal structure is...
(1998). Detailed descriptions of thestructures follow.Erionite: Framework featuresTwo crystallographically independent tetrahedral sitesare present: One forms the double six-membered ring andthe base of the cancrinite cage (T1), and the other formsthe single six-membered ring and the base of the ...
Crystal Structure: Two isolated tetrahedra (A & B) need more positive ions for neutrality than two sharing an oxygen (C & D). B and D are simplified versions of A and C, respectively. On the right: Common silicate structures. Arrows indicate directions in which structure repeats indefinitely...
Crystal chemistry of silicate minerals of geophysical interest Recent crystal chemical research on rock-forming silicate minerals has focused on the accurate refinement of room temperature and high-temperature crystal structures. The data are of sufficient accuracy to allow detailed examination of s... ...