Journal/NDM40 2005 eng

New Data on Minerals, vol.40, 2005

New Data on Minerals. Moscow.: Ocean Pictures, 2005. volume 40, 168 pages, 15 color and 99 b/w drawings, schemes, photos.

Содержание

1 Summary
2 Editorial Board
3 Publishing group
4 Сontent

Summary

The volume 40 includes articles on new mineral species, among which chukhrovite(Nd), tsepiniteSr, senkevichite, and kyrgyzstanite are described. The new data on rare minerals calcurmolite and turanite, easily oxidizable chalcopyrite from black smokers of the Rainbow hydrothermal field (MidAtlantic Ridge), vanadium hematite associated with minerals of precious metals, copper, zinc, and iron is given; also there is data on fahlores from the Kvartsitovye Gorki deposit and the nickelinebreithauptite mineral series from the Norilsk ore field. Features of bismuth mineralization of the Djimidon deposit (North Osetia) and raremetal mineralization connected with bituminous matters from pegmatites of the Khibiny and Lovozero massifs are revealed. The results of study of metacolloidal gold and delhayelite crystals are published.
In the «Mineralogical Museums and collections» part, the minerals named in honour of collaborators of the Fersman Mineralogical Museum, specimens of platinum of the Ugolnyi stream (Norilsk) from the Museum collection are described; interesting historical data on the items of Decorative and Precious Stones collection (PDK) is given. «Mineralogical Notes» part includes the mineralogical summary of main mineral types of ores of Europe and the article devoted to mineral drawings of Victor Slyotov and Vladimir Makarenko. In new «Discussions» part, the polemics on the theme «What are the mineral and mineral species» is opened. The review of new books is published.
The volume is of interest for mineralogists, geochemists, geologists, and also collaborators of naturalhistorical museums, collectors and amateur of minerals.

Editorial Board

Editor in Chief Margarita I .Novgorodova, Doctor in Science, Professor
Editor in Chief of the volume: Elena A.Borisova, Ph.D
Moisei D. Dorfman, Doctor in Science
Svetlana N. Nenasheva, Ph.D
Marianna B. Chistyakova, Ph.D
Elena N. Matvienko, Ph.D
Мichael Е. Generalov, Ph.D
N.A.Sokolova Secretary
Translator: Yiulia Belovistkaya

Publishing group

Photo: Michael B. Leybov, Michael E. Generalov
Leader of publishing group Michael B. Leibov
Executive Editor Ludmila А. Cheshko
Art Director Nikolay О. Parlashkevich
Editor Ekaterina V. Yakunina
Design (idea) Dmitrii Ershov
Layout Elena Yurlova

LIBRARY OF CONGRESS CATALOGING-IN PUBLICATION DATA
Authorized for printing by the Fersman Mineralogical Museum of the Russian Academy of Science
© Text, photo, drawings, Fersman Mineralogical Museum Russian Academy of Science, 2005
© Design, Ocean Pictures, 2005
Authorized for printing by the Fersman Mineralogical Museum of Russian Academy of Science
Text, photos, drawings, Fersman Mineralogical Museum of Russian Academy of Science, 2007
Design AlLTUM Ltd, 2007
Published by Fersman Mineralogical Museum RAS
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email: mineral@fmm.ru; www.fmm.ru
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email: minbooks@online.ru; www.minbook.com
Printed in Russia

Сontent

New Minerals and Their Varieties, New Finds of Rare Minerals, Mineral Paragenesis

Pautov L.A., Bekenova G.K., Karpenko V.Yu., Agakhanov A.A. Chukhrovite(Nd), Ca₃(Nd,Y)Al₂(SO₄)F₁₃·12H₂O, a New Mineral, p. 5 - 10

In specimens from the oxidized zone of the KaraOba deposit (Central Kazakhstan), a new neodymiumdominant analogue of chukhrovite(Y) and chukhrovite(Ce) has been found; it has been named chukhrovite(Nd). The new mineral occurs in the form of isometric grains and small crystals represented by a combination of {100} and {111} faces, with sizes ranging from 0.05 to 0.4 mm; it forms zones within the larger crystals of chukhrovite(Y) also. Chukhrovite(Nd) is associated with quartz, fluorite, halloysite, chukhrovite(Y), anglesite, gearksutite, creedite, and the jarosite group minerals. The mineral is colourless, rarely white. Streak is white. Hardness is 3.54 on Mohs' scale. Density (meas.) is 2.42(3) g/cm³, density (calc.) is 2.42 g/cm³. The mineral is transparent, and in thin sections it has anomalous grey interference colours, n=1.443(2) (589 nm). Chemical composition (electron microprobe instrument, wt %) is following: CaO – 20.03; Y₂O₃ – 1.94, La₂O₃ – 2.32; Ce₂O₃ – 1.37; Pr₂O₃ – 1.37; Nd₂O₃ – 6.26; Sm₂O₃ – 1.90; Gd₂O₃ – 1.12; Dy₂O₃– 0.44; Ho₂O₃– 0.10; Al₂O₃– 12.09; SO₃– 9.38; F – 28.93; H2O (by difference) – 24.93, less O=F 12.18, total 100.00 wt%.Empirical formula is Ca_3.06(Nd_0.32Y_0.15La_0.12Sm_0.09Ce_0.07Pr_0.07Gd_0.05Dy_0.02Ho_0.01)_0.90 Al_2.03S_1.01O_3.96F_13.06·11.87H₂O. Ideal formula is Ca₃(Nd,Y)Al₂(SO₄)F₁₃·12H₂O. Cubic, space group Fd3, a=16.759(3) Å, V=4707.0(1) Å³, Z=8. Strong lines of Xray pouder pattern are following (dI(hkl)): 9.710(111); 5.927(220); 3.22-8(511); 2.555-7(533); 2.240-5(642); 2.180-6(731); 1.827-5(842). The IR spectrum is as follows: 3548, 3423, 1630, 1090, 586, 465 cm^-1. The type specimen of the new mineral is at the Fersman Mineralogical Museum, RAS (Moscow). читать далее...

Pekov I.V., Chukanov N.V., Zadov A.E., Rozenberg K.A., Rastsvetaeva R.K. TsepiniteSr, (Sr,Ba,K)(Ti,Nb)₂(Si₄O₁₂)(OH,O)₂·3H₂O, a New Mineral of the Labuntsovite Group, p. 11 - 16

TsepiniteSr is a new mineral of the labuntsovite group (the vuoriyarvite subgroup); it is an analogue of tsepinite-Na, tsepiniteK, and tsepinite-Ca, with predominance of Sr among the extraframework cations. Tsepinite-Sr has been found in hydrothermal paragenesis in cavities of nepheline-syenite pegmatite at the Mt. Eveslogchorr in the Khibiny massif, Kola Peninsula, Russia. It is associated with microcline, albite, natrolite, analcime, aegirine, eudialyte, leifite, vuoriyarviteK, tsepiniteCa, kuzmenkoite-Zn, paratsepinite-Ba, takanelite, etc. The mineral forms coarseprismatic crystals up to 0.2 x 0.4 x 2 mm in size and crusts up to 4 x 5 mm. It is translucent, colourless or white; the streak is white, and the lustre is vitreous. The mineral is brittle, without cleavage; the fracture is uneven. The Mohs' hardness is ~5. The measured density is 2.67(2), and the calculated density is 2.63 g/cm³ . The mineral is optically biaxial, positive; N_p=1.649(2), N_m=1.651(2), N_g=1.770(4); 2V_meas=20(5)°, 2V_calc=16°. Chemical composition is as follows (the electron microprobe data, H₂O by TGA, wt %): Na₂O 0.61, K₂O 1.30, CaO 0.92, SrO 5.12, BaO 4.27, MgO 0.01, MnO 0.05, FeO 0.08, ZnO 0.26, Al₂O₃ 0.18, SiO₂ 41.89, TiO₂ 18.49, Nb₂O₅ 16.07, H₂O 11.14, total 100.39. The empirical formula calculated on (Si,Al)₄O₁₂(O,OH)₂ is as follows: (Sr_0.28Ba_0.16K_0.16Na_0.11Ca_0.09Zn_0.02) 0.82 (Ti_1.32Nb_0.69Fe_0.01)_2.02(Si_3.98Al_0.02)₄O₁₂[(OH)_1.89O_0.11]₂·2.59H₂O. The ideal formula is (Sr,Ba,K)(Ti,Nb)₂ (Si₄O₁₂)(OH,O)₂·3H₂O (Z=4). The mineral is monoclinic; space group Cm. The unit cell parameters (from the single crystal data) are as follows: a=14.490(3), b=14.23(1), c=7.881(3) Å, β=117.28(2)° , V=1444(1) Å ³. The strongest lines on the X-ray powder pattern are as follows (d,Å -I (hkl)): 7.10-90 (020, 001); 6.45-50 (200, 20-1); 5.01-40 (021); 3.230-100 (42-1, 400, 40-2); 3.135-80 (022, 041, 24-1); 2.510-80 (44-1, 401, 40-3, 042), 1.728-50 (461, 46-3, 081, 442, 44-4), 1.570-45 (84-1, 820, 84-3, 190, 82-4). The IR spectrum is given. The type specimen is deposited in the Fersman Mineralogical Museum RAS, Moscow. читать далее...

Agakhanov A.А., Pautov L.A., Uvarova Y.A., Sokolova E.V., Hawthorne Frank, Karpenko V.Yu. Senkevichite, CsKNaCa₂TiO[Si₇O₁₈(OH)], a New Mineral, p. 17 - 22

Senkevichite is a new cesium mineral, which has been found in the alkaline massif of Darai-Piyoz (Tajikistan). The mineral forms intergrowths of elongated boardlike grains up to 1 mm in light in quartzpectolite aggregates from blocks consisting mainly of granulated massive quartz. When transparent, the mineral is colourless, otherwise, white. The fracture is brittle. The Mohs hardness is 5.56. Measured density is 3.12 g/cm³ . The mineral is biaxial, optically positive; α_p=1.616(2), β_m=1.645(2), γ_g=1.683(2). Triclinic, space group P1; a=10.4191(4) Å, b=12.2408(5) Å, c=7.0569(3) Å, V=887.8(1) Å ³, Z=2. Chemical composition is as follows (electron microprobe analysis; H₂O is calculated, wt %): SiO₂ – 50.48, TiO₂ – 8.94, Nb₂O₅ – 0.64, FeO – 0.50, MnO – 2.59, CaO – 11.09, Na₂O – 3.73, K₂O – 6.13, Cs₂O – 15.28, H2O (calc) – 1.09, total – 100.47. Empirical formula of the mineral is Cs_0.90K_1.08Na_1.00(Ca_1.65Mn_0.30Fe_0.06)_2.01(Ti_0.93Nb_0.04)_0.97O_0.97[Si₇O₁₈(OH)]. Ideal formula is CsKNaCa₂TiO[Si₇O₁₈(OH)]. Strong lines on Xray powder diagram are following (d, I): 4.08 (13), 3.33 (11), 3.25(25), 3.14 (21), 3.06 (100), 2.959 (20), 2.038 (17). Crystal structure is solved with R=4.5%. The type specimen of the new mineral is kept in the Fersman Mineralogical Museum RAS (Moscow, Russia). читать далее...

Agakhanov A.A., Karpenko V.Yu., Pautov L.A., Bekenova G.K., Uvarova Y.A., Sokolova E.V., Hawthorne Frank Kyrgyzstanite, ZnAl₄(SO₄)(OH)₁₂·3H₂O, a New Mineral from the KaraTangi Deposit, Kirgizia, p. 23 - 28

Journal/NDM40 2005 eng

Содержание

Summary

Editorial Board

Publishing group

Сontent

New Minerals and Their Varieties, New Finds of Rare Minerals, Mineral Paragenesis

Crystal Chemestry, Minerals as Prototypes of New Materials, Physical and Chemical Properties of Minerals

Mineralogical Museums and Collections

Mineralogical Notes

Discussion

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