Journal/NDM59 2025 eng

New Data on Minerals, Volume 59, 2025

DEADLINES FOR ARTICLES

Issue 1 - March 31, 2025
Issue 2 - May 31, 2025
Issue 3 - August 31, 2025
Issue 4 - November 30, 2025

Editorial Board

Editor in Chief:
Plechov P.Yu. -D.Sc. in Geology and Mineralogy, Professor
Members of Editorial Board:
Pekov I.V. - Corresponding Member of the Russian Academy of Sciences
Garanin V.K. - D.Sc. in Geology and Mineralogy, Professor
Borutsky B.E. - D.Sc. in Geology and Mineralogy
Spiridonov B.E. - D.Sc. in Geology and Mineralogy
Chukanov N.V. - D.Sc. in Physical and Mathematical Sciences
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

Pautov L.A., Shodibekov M.A., Makhmadsharif S. Discovery of tainiolite in the carbonatites of the Dunkeldyk massif, Eastern Pamirs, p. 5-12

Taeniolite, KLiMg₂Si₄O₁₀F₂, was discovered in a strontium-rich carbonatites of the Cenozoic subvolcanic potassium alkaline complex of Dunkeldyk (37^о46'50N, 74^o59'37E), Eastern Pamir, Gorno-Badakhshan Autonomous Oblast, Tajikistan. Taeniolite occurs as light-brown lamellar grains up to 3 mm in diameter and up to 0.4 mm in thick in a rock, which consists of calcium strontianite (Sr_0.54Ca_0.46)CO₃, fluorite, Sr-bearing calcite, strontianite, Sr-bearing fluorapatite, barite, amphibole group member, which close to magnesio-fluoro-arfvedsonite, aegirine, cancrinite group mineral, ankylite-(Ce) and pyrite. Taeniolite is optically biaxial (–), 2V = 5–10(2)^o. Refractive indices of the mineral are: n_g = n_m = 1.547(2), n_p= 1.524(2). Taeniolite from the Dunkeldyk massif is characterized with lithium content close to theoretical and extreme fluorine amount. Chemical analysis by electron microprobe (7 points) and LA-ICP-MS for Li gave SiO₂ 58.98, TiO₂ 0.09, Al₂O₃ 0.23, FeO 0.51, MnO 0.12, MgO 19.89, K₂O 11.28, Na₂O 0.38, Li₂O 3.65, F 9.24, H₂O 0.07, total 104.44; –O=F₂ –3.88; total 100.57 wt%. The empirical formula, based on 10 O apfu is: (K_0.97Na_0.05)_1.02(Li_0.97Mg_0.03)_1.00(Mg_1.97Fe_0.03Mn_0.01)_2.01(Si_3.97Al_0.02Ti_0.01)_4.00O₁₀[F_1.97(OH)_0.03]₂. The main absorption bands in the IR spectrum of taeniolite (cm^–1): 1129, 967, 721, 497, 383. In the Raman spectrum, strong lines (cm^–1): 184, 258, 295, 307, 334, 701, 956, 1146. X-ray powder pattern of taeniolite is given. Apparently, this is the first discovery of a lithium mineral in the Dunkeldyk carbonatites.
Keywords: minnesotaite, ferrohortonolite-fayalite plagiogranites, Castel Mountain, Mountain Crimean mesozoids. читать далее...

Gritsenko Yu.D., Ogorodova L.P., Vigasina M.F., Dedushenko S.K., Ksenofontov D.A., Melchakova L.V. Staurolite from staurolite-almandine-muscovite schists of the Patom Highland (Mamsko-Chuisky District, Irkutsk Region): a comprehensive physicochemical study, p. 13-24

The article presents the results of a comprehensive physicochemical study of staurolite from staurolite-almandine-muscovite schists of the Patom Highland of the Mama-Chuisky District (Irkutsk Region) using powder X-ray diffraction, electron probe microanalysis, IR, Raman and Mössbauer spectroscopy. The chemical formula of the mineral is (Fe²⁺_1.7Mg_0.3)(Al_8.9Mg_0.1)(Si_3.9Al_0.1)O_22.8(OH)_1.2. The enthalpy of formation of the studied staurolite from the elements was determined for the first time using high-temperature melt solution calorimetry on a Calvet microcalorimeter (– 11998 ± 11 kJ/mol). The value of its standard entropy was estimated and the value of the Gibbs energy of formation was calculated: 489.8 ± 2.1 J/(mol K) and −11271 ± 11 kJ/mol, respectively. The thermodynamic constants for staurolite of the idealized composition Fe²⁺₂Al₉Si₄O₂₃(OH) were calculated: Δ_fH⁰(298.15 K) = − 11943 ± 12 kJ/mol, Δ_fG⁰(298.15 K) = − 11222 ± 12 kJ/mol .
Keywords: staurolite, Mamsko-Chuisky district, Patom Highland, Calvet microcalorimetry, enthalpy of formation, entropy, Gibbs energy, IR spectroscopy, Raman spectroscopy, Mössbauer spectroscopy. читать далее...

Karpenko V.Yu., Pautov L.A., Siidra O.I., Agakhanov A.A. New data on the libethenite-zincolibethenite isomorphic series from the Khodzha-Rushnay-Mazar (S. Fergana, Kyrgyzstan) and the Kester deposit (Yakutia, Russia), p. 25-35

New data for the libethenite Cu2(PO4)(ОН) – zincolibethenite CuZn(PO4)(ОН) series from the Khodzha-Rushnay-Mazar location of V-bearing carbonaceous-siliceous slates (S. Fergana, Kyrgyzstan) and the Kester Sn-deposit (Yakutia, Russia) were obtained. Libethenite from Kyrgyzstan forms radial aggregates of prismatic crystals in which ZnO ranges from 13.1 to 19.6 wt% (0.38 to 0.58 Zn apfu). Vanadium traces occurs in it (0.3–0.4 wt% V). Libethenite from Yakutia forms several morphological varieties - dipyramidal isometric and dipyramidal flattened crystals and prismatic crystals growing on augelite or quartz. The Zn content is more variable and reach 21 wt% ZnO (0.63 Zn apfu). For most analysis, the ZnO content ranges from 13 to 17 (wt%) and tend toward the intermediate composition Cu(Zn_0.5Cu_0.5)(PO₄)(OH). Arsenic occurs in libethenite from Kester (up to 11.8 wt% As₂O₅). There intense lines (101) and (011) in the libethenite X-ray powder are well resolved for Zn-free varieties, but they overlap for high-Zn libethenite and zincolibethenite, and their resolution requires longer count times. Unit cell volume increases from Zn-free libethenite (396.8 ų) through Zn-bearing varieties (400.6 and 402.1 ų) to zincolibethenite (404.5 ų). Density, microhardness, optical properties and Raman spectra of minerals of the libethenite - zincolibethenite series from S. Fergana and Yakutia are given.
Keywords: libethenite, zincolibethenite, carbon-siliceous slates, zinc, vanadium, arsenic, Khodzha-Rushnay-Mazar, Kester deposit. читать далее...

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