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Journal/NDM47 2012 eng
New Data on Minerals. Volume 47, 2012. 160 pages, 166 photos, drawings, and schemes.
Содержание
Summary
This volume includes a description of cristofsherferite- (Ce), a new mineral from the chevkinite group found in the Eifel volcanic region in Germany, niobokupletskite (the third find in the world) and minerals associated with it from the Matchinsky massif in Kyrgyzstan, a rare variety of native gold - porpecite from gold placers Ambositra region in Madagascar, fergusonite- (Y) and its alteration products from granite pegmatite veins of the Beregovoy Zenkovsky massif in the Urals, rare barium minerals (arctite, hanneshit, bussenite and phases close to it) from iyolite-urtites of the Poachvumchorr mountain of the Khibiny massif on Kolsky -ove. The mineralogy of the volcanic deposits Radka, Chelopech, Elshitsa (Bulgaria) and Lebedinoe (Central Aldan) is compared, as well as a synthesis of the literature and new data obtained on complex uranium oxides in uranium ores. The results of studying zonal diamond crystals from the Arkhangelsk tube (Russia) and new data on the phase composition in the central part of the Cu – Fe – S system are presented.
The section "Mineralogical museums and collections" describes the products of Tuvan stone-cutters in the collection of the Mineralogical Museum named after A.E. Fersman RAS, as well as the history of the creation and exposure of the Geological Museum. V.V. Ershov Moscow State Mining University. The section "Persons" describes the activities of Academician V.I. Vernadsky at the Mineralogical Museum of the Russian Academy of Sciences. “Mineralogical notes” are presented by articles by Ural authors about new finds of morion, aquamarine and amethyst in the Sanar granite massif (South Ural) in isonal crystals of sherlais from pegmatites of the Ilmensky mountains. "Discussions" contain a review of the work of V.I. Zhernakova “Emerald Mines of the Urals”, published in 2009, and an essay on fundamental and genetic mineralogy, which analyzes the experience of using detailed mineralogical studies to solve the problems of petrogenesis and ore genesis using the Khibiny massif as an example.
This journal is of interest for mineralogists, geochemists, geologists, staff of natural history museums, collectors, and rocks aficionados.
Editorial Board
Editor in Chief: V.K. Garanin - Doctor of Geology and Mineralogy, Professor
Executive Editor: E.A. Borisova - Ph.D.of Geology and Mineralogy
Members of Editorial Board:
M.I. Novgorodova - Doctor of Geology and Mineralogy, Professor
B.Ye. Borutzky - Doctor of Geology and Mineralogy
E.I. Semenov - Doctor of Geology and Mineralogy
S.N. Nenasheva - Ph.D.of Geology and Mineralogy
E.N. Matvienko - Ph.D.of Geology and Mineralogy
M.B. Chistyakova - Ph.D.of Geology and Mineralogy
M.E. Generalov - Ph.D.of Geology and Mineralogy
L.А. Pautov - Senior Researcher
Publishing group
Photo - M.B. Leybov
Leader of Publishing group - M.B. Leybov
Managing Editor - L.A. Cheshko
Editor - A.L. Cheshko
Design and Layout - I.A. Glazov
Translators - I. Anisimov, I.A. Baksheev, V. Karpenko, A.S. Yakubchuk
Editors (English Style) - Dr. Peter Modreski and Dr. Edward Rosenzweig
You can order the current issue or subscribe to the magazine at www.minbook.com or by email minbooks@online.ru
Сontent
New Minerals and Their Varieties, New Finds of Rare Minerals, Mineral Paragenesis
Niobokupletskite from the Matchinsky Massif (Kyrgyzstan), pp. 5 – 25
Zone diamond crystals from the Arkhangelsk tube (Arkhangelsk diamondiferous province, Russia), pp. 26 – 32
We studied a representative collection of cubic and close-up diamond crystals with a zonal structure from a tube of the Arkhangelsk deposit named after M.V. Lomonosov Arkhangelsk diamondiferous province. The mineralogical description of the collection diamonds is carried out, as well as the study of the features of the internal structure on polished crystals by the methods of color cathodic luminescence (CCL) and infrared Fourier spectroscopy (ICSF). Several types of diamonds have been identified, the interpretation of the revealed zonality of which is given from several genetic positions. читать далее...
Christofschäferite-(Cе), (Ce,La,Ca)4Mn2+(Ti,Fe3+)3(Fe3+,Fe2+,Ti)(Si2O7)2O8 – a new chevkinite-group mineral from the Eifel area, Germany, pp. 33 - 42
A new mineral of the chevkinite group Christofsherfer- (Ce) was found in an eruptive fragment of a high-manganese metasomatic rock on Mount Wingsertsberg (Laacher See, near Mendig, Mount Eifel, Rhineland-Palatinate, Germany) in association with orthoclase, rhodonite, bustamite, tephroite, circus , fluorapatite, pyrophanite and Jacobsite. Christofsherferit- (Ce) forms imperfect isometric crystals up to 3 mm across. The color of the new mineral is black, the gloss of resin, the dash is brown. Fragile, cleavage not observed, hardness on the Mohs scale 6; the measured density is 4.8 (1) g / cm3; the calculated density is 4.853 g / cm3. The new mineral is optically biaxial (-), np = 1.945 (10), nm = 2.015 (10), ng = 2.050 (10), 2V = 70 (10) °, 2V habit = 68 °. The dispersion of the optical axes is not observed. Pleochroism is strong according to the scheme Z (dark brown)> Y (brown)> X (light brown). In the IR spectrum, there are no absorption bands of anions of CO32 and hydrogen-containing groups. Chemical composition (according to local X-ray spectral analysis, Mn valency according to XANES spectroscopy, Fe2 + / Fe3 + ratio was determined from structural data; wt%): CaO 2.61, La2O3 19.60, Ce2O3 22.95, Pr2O3 0.56, Nd2O3 2.28, MgO 0.08, MnO 4.39, FeO 4.18, Fe2O3 3.11, Al2O3 0.08, TiO2 19.02, Nb2O5 0.96, SiO2 19.38, sum 99.20. The empirical formula: (Ce1.72La1.48Nd0.17Pr0.04Ca0.57) Mn2 + 0.76Fe2 + 0.72Mg0.02Fe3 + 0.48Al0.02Ti2.935Nb0.09Si3.98O22. The crystal structure was studied by a single crystal method, R = 0.055. Christofsherferit- (Ce) monoclinic, sp.gr. P21 / m; unit cell parameters: a = 13.3722 (4), b = 5.7434 (1), c = 11.0862 (2) Å, b = 100.580 (2) °, V = 836.97 (4) Å3, Z = 2. Mn2 + dominates the octahedral position M1. Strong powder X-ray lines [d, Å (I; hkl)]: 4.90 (39; -111), 4.64 (65; -202), 3.480 (78; 310), 3.169 (81; 311, -312), 3.095 ( 43; -113), 2.730 (100; 004), 2.169 (46; -421, -513), 1.737 (46) (603, 504, 315, 025, -622). The mineral is named after the famous German mineral collector Christopher Schäfer. The reference material is stored in the Mineralogical Museum. A.E. Fersman Russian Academy of Sciences in Moscow (registration number 4227/1). читать далее...
A new manifestation of porpecite and mineralogy features of placer gold from the gold-bearing region of Ambositra, Madagascar, pp. 43–46
In the concentrates selected during the study of gold placers in the Ambositra region (Madagascar), Au-Pd, Au-Cu intermetallic compounds, previously unknown here, were revealed for the first time, indicating the existence of indigenous sources of gold in the region that are not similar to those described previously on the island. читать далее...
Fergusonite- (Y) and products of its change in granite pegmatite veins of the Beregovoy Zenkovsky massif in the Urals, pp. 47 – 55
We studied large (up to 2–5 cm) crystals and grains of fergusonite- (Y) with the composition (Y0.65REE0.23U0.07Th0.04Ca0.01) 0.98 (Nb0.91Ti0.05Ta0.03) 0.99O4, hydrated to various degrees and substituted from the periphery, yttropyrochlore- (Y) aggregate, (Y0.54REE0.23U0.11Th0.05Ca0.08) 1.01 (Nb1.76Ti0.20Ta0.05) 2.01O6 (OH) · 3.8H2O, and along the cracks with broccite and ceralite. The intergrowths and intergrowths of accessory rare-earth-rare-metal minerals from the association with fergusonite - (Y) –ferro-imanganocolocolbit, ilmenorutil, samarskite- (Y), polycraz- (Y), zircon, xenotime- (Y), monazite- (Ce), uranpirochlor, beta-phosphite, uraninite, thorite. читать далее...
On Late Barium Mineralization in Iyolite-Urtites of Mount Poachvumchorr of the Khibiny Massif (Kola Peninsula) and the Processes of Its Formation, pp. 56 – 63
For some alkaline-ultrabasic rocks of the Khibiny massif — ijolite-urtites, localized at the foot of the town of Poachvumchorr at a depth of about 250–280 m, an association of high-barium minerals was discovered. Among them, a number of rare minerals have been identified: arctite Na5BaCa7 (PO4) 6F3, hanneshite (Na, Ca) 3 (Ba, Sr, REE, Ca) 3 (CO3) 5, bussenite Na2Ba2FeTi [Si2O7] (CO3) (OH) 3F and phase close in composition to bussenite. An additional study showed the alleged absence of carbon (CO3 groups) in it and, probably, a higher fluorine content. Perhaps this phase is a highly fluorine-free carbonate analogue of bussenite. An analysis of the composition, form of manifestations, morphology of the listed minerals and their relationships with earlier phases suggests their formation at the late stages of mineral formation. читать далее...
Comparison of the mineralogy of the volcanic deposits Radka, Chelopech, Elshitsa (Bulgaria) and Lebedinoe deposit (Central Aldan, Russia), pp. 64 – 70
The formation of ores in the volcanogenic deposits of Radka, Chelopech, Elshitsa (Bulgaria) and the plutogenic deposit Lebedinoe (Central Aldan) took place under similar geological conditions. The rare metal mineralization is typical of the Radka deposit, and mainly tellurium minerals are present on Yelshitsa, while the mineralization of Chelopech and Swan includes minerals of both rare metals (V, Ge, Ga, In) and tellurium. The Radka deposit is characterized by a deeper erosion section than Chelopech and Swan. In Jelsica, only the zone closest to the surface has been studied and, therefore, studied. This allows us to conclude that it is possible to find minerals Ge, Ga, In, known on Radka, at deeper horizons of the Lebedinoye and Elshitsa deposits. читать далее...
Complex Uranium Oxides in Uranium Ores, pp. 71 – 83
In nature there are those containing U4 + U6 + or only U6 + titanates. The characteristic physical, chemical and optical properties are described for them, their role in the formation of uranium ores is revealed. The most common - brannerite - is divided into thorium (up to 30% Th) and thorium-free (0.0n% Th and lower) in composition. In most of the 12 mineralogical types of ores in Russia and related countries, as well as in conglomerates of Canada and Brazil, it and other titanates are ore-forming minerals. The presence of nanosized orthobrannerite in uranium ores Druzhnoye on Aldan (RF) was revealed. U4 + molybdates have little effect on the formation, composition and quality of uranium ores. Betafite, uranium-containing microlite and pyrochlore are common in carbonatite ores, from which uranium was recovered as an associated element. It should be considered promising to be involved in the development of large complex carbonatite ores in Russia. читать далее...
Crystal Chemistry, Minerals as Prototypes of New Materials, Physical and Chemical Properties of Minerals
New Data on the Phase Composition in the Central Part of the Cu-Fe-S System, pp. 85 – 91
To determine the features of the formation of phase equilibria during magmatic crystallization, with chalcopyrite CuFeS2, isocubanite (cubic fcc cubanite) CuFe2S3, talnachite Cu9Fe8S16, moiukite Cu9Fe9S16 and heikokite Cu4Fe5S8, the phase compositions of the central part of the Cu – Fe – S – 45 system were studied: Cu / Fe = 1.44–0.25. The synthesized phases have a variable composition. The composition intervals established in them (with respect to the Cu / Fe ratio) for tetragonal chalcopyrite (1.03–0.67), isocubanite (0.61–0.39) and cubic pc heikokite (0.92–0.68) significantly differ from the Cu / Fe ratios in formulas of the corresponding minerals. The composition of moiukite with Cu / Fe = 1.04–0.93 lies on the equilibrium line of bornite – moiukite – cubanite, which separates the regions of chalcopyrite and haykokite phase associations. The crystallization region of iron-enriched chalcopyrite (Cu / Fe = 0.99–0.67) decreases with increasing melt cooling rate. Chalcopyrite solid solution (Cu / Fe = 1.03–0.67) crystallizes in a cubic pc form from melts with sulfur content <48 at.% S. читать далее...
Mineralogical Museums and Collections
Works of Tuvan stone-cutters at the Mineralogical Museum named after A.E. Fersman, pp. 93 – 101
The article presents the first information about the works of small plastic from a variety of stone material from Tuvan stone cutters of the 1920 and 1980. читать далее...
The history of the creation and exposure of the Geological Museum. V.V. Ershov Moscow State Mining University, pp. 102 – 110
The article is dedicated to the Geological Museum. V.V. Ershov, the history of its creation, including the first museum of the Moscow Mining Academy, and the current state of exposure. читать далее...
Personalities
V.I. Vernadsky at the Mineralogical Museum of the Russian Academy of Sciences, pp. 112 – 115
The aspects of scientific activity of academician V.I. Vernadsky as director of the Mineralogical Museum of the Russian Academy of Sciences (1906-1918), currently bearing the name of his student - A.E. Fersman. читать далее...
Mineralogical Notes
New finds of morion, aquamarine and amethyst on the Sanar granite massif (Southern Urals), pp. 117 – 121
In the South Urals, in the northeast endocontact of the Sanary granite massif of Kochkarsky anticlinorium in the vein of granite pegmatite, a drusen cavity with semiprecious mineralization was found, which is of genetic interest. Aquamarine, morion and amethyst found in the pegmatite cavity can be attributed to jewelry and ornamental stones in their qualities. читать далее...
Зональность и секториальность кристаллов шерла из пегматитов Ильменских гор на Урале, стр. 122 - 126
The shape, color, and composition of zonal-sectorial tourmaline crystals of a number of Dravite-Reindeer-Sherl and Reindeer-Sherl from the late granite pegmatites of the Ilmen mountains are studied. Sherls of different veins differ in iron content f = Feot ./ (Feot. + Mg). In the non-amazonite pegmatite mines 232, the central and middle zones of the ridge growth have f = 0.67–0.74, and the peripheral ones — 0.83–0.85. Sherl bezamazonitovogo topaz-beryl mine 196 and amazonite pegmatite mines 112 and 270 does not contain Mg, but is relatively enriched in Mn. The different coloration of the same-age (synchronous) zones of different pyramids of sherl growth is due to both a different iron content and a difference in the contents of Al, Mg and Mn. читать далее...
Discussions
Essays on fundamental and genetic mineralogy: 6. The experience of using detailed mineralogical studies to solve the problems of petrogenesis and ore genesis by the example of the Khibiny massif, pp. 128 - 157
The article is devoted to the use of the data of detailed mineralogical studies as petrogenetic and ore-genetic indicators for solving cardinal issues of petrology and geology of the Khibiny alkaline massif and its unique apatite-nepheline deposits. The author draws attention to significant differences in the conclusions obtained, on the one hand, by traditional geological and petrological methods, and, on the other hand, as a result of mineralogical studies. читать далее...
Popov V.A. Ah, these emeralds! About the book of V.I. Zhernakova "Emerald Mines of the Urals", pp. 158 - 160