Browsing ELibrary by Title
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- Browsing ELibrary by Title
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing ELibrary by Title
Now showing items 11890-11909 of 21934
-
(2001)A series of fluoride perovskites related to neighborite was investigated using X-ray and neutron diffraction techniques, and Rietveld profile refinement of powder diffraction data. The series (Na1− x K x )MgF3 comprises ...
-
(2002)Phosphorus was discovered in 1669 by Hennig Brand. The word phosphorus originates from the two Greek words phos , meaning light, and phoros , meaning bearer, due to the phosphorescent nature of white phosphorus. Phosphorus ...
-
(1999)
-
(2001)This chapter discusses the crystal chemistry, emphasizing observed chemical variations, for those zeolites that completely fulfill the requirements of Smith (1963) for a zeolite. These requirements include: (a) a ...
-
(1999)The crystal structure of a low-silica and fully dehydrated NaX zeolite, the synthetic analogue of natural faujasite, with approximate chemical composition Na93Al93Si99O384 (Si/Al = 1.06) as determined by microprobe and NMR ...
-
(2003)Grechishchevite, Hg3S2(Br,Cl,1)2, is the only known mercury sulfohalide whose anionic part involves three halogens Cl, Br, and I, in addition to sulfur. The crystal structure of the mineral was not solved. The structure ...
-
(2003)The previously unknown crystal structure of the basic lead nitrate Pb2(OH)3(NO3) has been determined using single-crystal X-ray diffraction data (Mo-Kα radiation, CCD area detector). The compound is orthorhombic, space ...
-
(2004)The crystal structure of arapovite, ideally U4+ (Ca,Na)2 (K1– x □ x ) [Si8 O20], x ≈ 0.5, tetragonal, a 7.5505(4), c 14.7104(9) A, V 838.6(1) A3, space group P 4 /mcc , Z = 2, D calc. 3.365 g/cm3, was refined to an R 1 ...
-
(2002)The crystal structure of arsentsumebite, ideally, Pb2Cu[(As, S)O4]2(OH), monoclinic, space group P21/m, a = 7.804(8), b = 5.890(6), c = 8.964(8) Å, β = 112.29(6)°, V = 381.2 Å3, Z = 2, dcalc. = 6.481 has been refined to ...
-
(1997)The crystal structure of averievite, Cu5O2(VO4)2·nMX has been determined. Trigonal system, space group P3, a = 6.375(1), c = 8.399(1) Å, V = 295.6(1) Å3, Z = 1, Dx = 4.01(1) g/cm3. The atomic arrangement is characterized ...
-
(2001)The crystal structure of baricite, the Mg-dominant analogue of vivianite, (Mg1.70Fe1.30-x2+Fex3+)(PO4)(2)(OH)(x). (8-x)H2O, a 10.085(2), b 13.390(3), c 4.6713(9) Angstrom, beta 104.96(3)degrees, V 609.4(1) Angstrom (3), ...
-
(2004)Calcium catapleiite, CaZrSi3O9•2H2O, the calcium-dominant analogue of catapleiite, Na2ZrSi3O9•2H2O, firstly described as hexagonal, space group P63/mmc, with a 7.32, c 10.15 A, is actually orthorhombic, space group Pbnn, ...
-
(2003)The crystal structure of kassite, ideally Ca[Ti2O4(OH)2], containing 2 wt% Cr2O3, from the Saranovskoye chromite deposit, Perm' district, Northern Urals, has been determined and refined to R1 = 0.06 using single crystal ...
-
(2004)Fenaksite K2Na2Fe2Si8O20 was discovered by M.D. Dorfman in Khibiny in 1959. Its crystal structure was determined and refined with the application of photomethod up to R = 0.148. We studied the stucture of synthetic fenaksite ...
-
(1996)Frankamenite, K3Na3Cas[Si12030]F3(OH)1HzO , from the Yakutian charoitic rocks, has a triclinic unit cell with the dimensions: a = 10.094(3), b = 12.691(3), c = 7.240(1) A, ~ = 90.00(2) ~ 13 = 111.02(2) ~ 7 = 110.20(2) ~ ...
-
(2004)The crystal structure of ilimaussite-(Ce), (Ba,Na)(10)K3Na4.5Ce5(Nb,Ti)(6)[Si12O36][Si9O18(O,OH)(24)]O-6, from the type locality, the Ilimaussaq alkaline complex, South Greenland, has been solved and refined to R = 0.11 ...
-
(2004)The crystal structure of jonesite, Ba2(K,Na)[Ti2(Si5Al)O18(H2O)](H2O)n (monoclinic, P21/m, a = 10.618(2), b = 25.918(4), c = 8.6945(14) Å, β = 127.633(3)°, V = 1894.8(6) Å3, Z = 4) from the Benitoite Gem Mine, San Benito ...
-
(2004)The NaZr silicate was discovered sixty years ago in Lovoserskij alkaline rock mass. It was called lovozerite. Crystal structures of more than 15 natural and synthetic lovezerites were determined by today. Zirconium, titanium, ...
-
(2001)The crystal structure of mitryaevaite, Al5(PO4)2[(P,S)O3(OH,O)]2F2(OH)2(H2O)8·6.48H2O, a secondary mineral from the alteration zone of carbonaceous, vanadium-bearing shales from northwestern Karatau Range and Zhabagly ...
-
(2003)The crystal structure of moskvinite-(Y), ideally Na2 K (Y,REE) [Si6O15], from the moraine of the Dara-i-Pioz glacier, the Alai mountain range, Tien-Shan mountains, northern Tajikistan, a 10.623(2), b 14.970(2), c 8.553(1) ...
Now showing items 11890-11909 of 21934