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Journal/NDM54 2020 eng

Revision as of 15:31, 8 September 2020 by Kronrod (talk | contribs) (Issue 2)
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New Data on Minerals, Volume 54, 2020

DEADLINES FOR ARTICLES

Issue 1 - March 31, 2020
Issue 2 - May 31, 2020
Issue 3 - August 31, 2020
Issue 4 - November 30, 2020

Editorial Board

Editor in Chief:
Plechov P.Yu. - Doctor of Geology and Mineralogy, Professor
Members of Editorial Board:
Garanin V.K. - Doctor of Geology and Mineralogy, Professor
Novgorodova M.I. - Doctor of Geology and Mineralogy, Professor
Borutsky B.E. - Doctor of Geology and Mineralogy
Spiridonov B.E. - Doctor of Geology and Mineralogy
Kamenetsky V.S. - Professor (University of Tasmania)
Nenasheva S.N. - PhD in Geology and Mineralogy
Matvienko E.N. - PhD in Geology and Mineralogy
Generalov M.E. - PhD in Geology and Mineralogy
Pautov L.A. - Senior Researcher
Layout Designer
Kronrod E.V. - PhD in Chemistry

Content

Issue 1

Smolyaninova V.N. Devoted to the 100th anniversary of the birth of Natalia Nikolaevna Smolyaninova, pp. 1-18

Natalia Nikolaevna Smolyaninova (1919–2013) was a mineralogist, daughter of the famous mineralogist Nikolai Alekseevich Smolyaninov. She worked at IGEM of the Academy of Sciences of the USSR, studied mineralogy of the radium-uranium-vanadium deposit Tyuya-Muyun (Kyrgyzstan) and tungsten-molybdenum deposits Akchatau and Batystau (Kazakhstan). She was editor-in-chief of five of the 12 issues of the encyclopedic guide "Minerals".



Karpenko V.Yu., Pautov L.A., Shodibekov M., Makhmadsharif S., Mirakov M.A. Coconinoite: find at the Zor-Yarchi-Chak ore occurrence, Eastern Pamir, pp. 19-25

The find of coconinoite Fe2Al2 (UO2) 2 (PO4) 4 (SO4) (OH) 2 ∙ 20H2O in the oxidation zone at the uranium occurrence Zor-Yarchi-Chak (right bank of the South Ak-Baital River, Eastern Pamir, Tajikistan) is described. The mineral is found in cracks of essentially quartz rock in the form of dense clay-like masses of yellowish color (up to 2 cm2 in area), consisting of lamellar individuals 5–10 microns in diameter across. The refractive index nm = 1.589 (3) at 589 nm. The IR spectrum of the mineral is given. Composition (molecular weight, wt.%, Average for 24 analyzes; range for Al and Fe; H2O - CNH analysis, average for 2 analyzes, wt.%): Al2O3 6.95 (5.44–7.70), Fe2O3 11.13 ( 9.77–12.91), UO3 39.09, P2O5 18.35, SO3 4.64, H2O 22.7, total 102.86. The overestimation of the amount may be associated with partial dehydration of the mineral during microprobe analysis. The empirical formula is Fe2.07Al2.12U + 62.08P3.93S0.88О24 (OH) 2 · 18.16H2O (calculated on 24O + 2OH). Unit cell parameters: a = 12.45 (1), b = 12.87 (1), c = 22.75 (1), β = 105.66 (4). An analysis of the variations of Al and Fe in coconinoite from different locations (up to the high-aluminum non-iron analogue, Koscheka, Uzbekistan) confirms the existence of a natural series with extreme Al and Fe dominant members.



Pautov L.A., Karpenko V.Yu., Mirakov M.A., Alinazarov U.S., Shodibekov M.A., Iskandarov F.Sh. About bismuthocolumbite from myarolite granite pegmatites in the Eastern Pamirs, pp. 26-37

Findings of bismuthocolumbumite in myarolite granite pegmatites of the Rangkul pegmatite field in the Eastern Pamirs, Gorno-Badakhshan Autonomous Okrug, Tajikistan are described. The mineral was found in the form of crystals up to 2 cm in the myarol cavities of the pegmatite veins Mika, Malysh and in the form of sprouts of 20–30 μm in Sc-containing columbite-Mn in intergrowth with eschinitis- (Y) in the near-myarol complex of pegmatite Dorozhny. The crystals were measured on a goniometer; the calculated and measured coordinates of the faces are given (in the setup a <c <b). The habitus of the crystals is prismatic, determined by the faces of the rhombic prism m {110}; minor and weakly expressed faces of the prismatic belt: pinacoid {010}, prisms {130}, {150}, {160}, {170}; the usual faces of the head are the rhombic prism i {101} and the dipyramid u {111}, the more rare prism f {032}. The color of bismuthocolumbite in crystals is dark brown, almost black, shines reddish-brown, in small fragments reddish-brown to light brown. The trait is light brown. Cleavage perfect according to (010). The measured density, g / cm3, 7.36 (1) (Kid), 7.61 (1) (Mika). Optically biaxial (+), 2V = 70 (10) °, the dispersion is strong, r> v. The plane of the optical axes is perpendicular to the (010) plane. The refractive indices of bismuth-columbite from Mick's pegmatite: np = 2.42 (1), nm = 2.45 (1), ng = 2.50 (2). In reflected light, gray with a faint bluish tint, medium reflectivity, strong anisotropy, strong reflections from yellow to reddish-brown. Reflection spectra are given. Microhardness VHN100 = 360 (Kid), 353 (Mika). 6 m. analyzes. Chem. composition (wt.%, selective an., Kid, Mika, Dorozhniy): Ta2O5 2.11, 11.66, 8.61; Nb2O5 35.54, 28.11, 8.61; WO3 0.08, 0.11, 3.60; TiO2 0.02, 0.00, 0.58; PbO 0.10, 0.10, 0.00; SnO2 0.03, 0.12, 0.00; MnO 0.00, 0.01, 0.26; FeO 0.03, 0.00, 0.11; Sb2O3 0.78, 1.77, 8.55; Bi2O3 62.50, 57.59, 49.75; amount 101.19, 99.47, 100.10. X-ray powder diffraction patterns are shown. Parameters of the rhombic unit cell (Å): a = 4.982 (2), b = 11.719 (4); c = 5.677 (2) (Kid); a = 4.981 (2), b = 11.746 (4); c = 5.670 (2) (Mika). Possible reasons for the rarity of bismuthocolocolumbite as compared to stibiocolumbite and their Ta analogues are discussed.



Kasatkin A.V. To the question of re-studying mineralogical samples from museum collections. I. General Aspects, pp. 38-51

The article is devoted to the problem of re-studying the samples of minerals stored in museum collections. Two main areas of revision of museum material are examined in detail. One of them is the re-study of the originals of the first study of minerals (type specimens), specifically aimed at clarifying the essential characteristics of insufficiently studied mineral species. The second direction covers all other samples stored in museum collections. The results of their re-study can be the discovery of new mineral species or clarification of the characteristics of already known minerals, finds, including the first, of rare minerals in a certain region and, in any case, an increase in the degree of knowledge or reliability of the diagnosis of a particular mineral. The significance of the results of such studies determines the relevance of the re-study of museum material and increases the value of museum collections.



Issue 2

Pdf icon.pngKasatkin A.V., Skoda R., Chukanov N.V. On restudy of mineral specimens from museum collections. I. Cannonite and leguernite from Bukuka deposit, Transbaikalia , pp. 53-60

Rare bismuth sulfates cannonite Bi2O(SO4)(OH)2 and leguernite Bi12.67O14(SO4)5 have been identified by us as a result of the restudy of the samples of bismuthinite from Bukuka tungsten deposit (Eastern Transbaikalia, Russia), deposited in the systematic collection of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow under catalogue number 56077. Both minerals are intimately intergrown in polymineral pseudomorphs after bismuthinite forming veins up to 4 cm long and up to 0.5 cm thick. Empirical formulae are as follows: cannonite Bi2.06S0.97O5(OH)2, leguernite Bi12.67S5.00O34. The monoclinic unit-cell dimensions are: cannonite: a = 7.691(1), b = 13.874(2), c = 5.6569(8) Å, β = 109.23(1)°, V = 569.90(9) ų and Z = 4; leguernite: a = 11.197(2), b = 5.714(1), c = 11.879(2) Å, β = 99.37(2)°, V = 749.9(2) ų and Z = 1. Frequencies of strong bands in Raman spectra are for cannonite: 111, 121, 144, 184, 221, 318, 437, 450, 560, 619, 983, 1059, 3439 cm–1, for leguernite: 150, 183, 216, 313, 474, 969 cm–1. Both minerals are found for the first time in Russia. читать далее...