Ivanyukite-Na-T, Na₃[Ti₄(OH)O₃(SiO₄)₃]·7H₂O, ivanyukite-Na-C, Na₂[Ti₄O₂(OH)₂(SiO₄)₃]·6H₂O, ivanyukite-K, K₂[Ti₄(OH)₂O₂(SiO₄)₃]·9H₂O, and ivanyukite-Cu, Cu[Ti₄(OH)₂O₂ (SiO₄)₃]·7H₂O, are new microporous titanosilicates found in a natrolitized microcline-aegirine-sodalite lens in the orthoclase-bearing urtite at the Koashva Mountain (Khibiny Massif, Kola Peninsula, Russia). The minerals occur as well-shaped colorless (ivanyukite-Na-T), pale-orange (ivanyukite-Na-C), pale-blue (ivanyukite-K), and green (ivanyukite-Cu) cubic crystals (up to 1.5 mm in diameter) grown on microcline, vinogradovite, sazykinaite-(Y), natrolite, and djerfisherite. The minerals have vitreous luster and white streak. They are transparent and non-fluorescent. The Mohs hardness is estimated as ~4. The minerals are brittle. Cleavage is perfect on {100} (ivanyukite-Na-C, ivanyukite-K, and ivanyukite-Cu) or on {101̅1} (ivanyukite-Na-T), fracture is stepped. Density, measured by the sink/float method in heavy liquids, ranges from 2.60 (ivanyukite-Na-C) to 2.70 g/cm³ (ivanyukite-Na-T, ivanyukite-K, and ivanyukite-Cu), whereas calculated densities are: 2.58 (ivanyukite-Na-T), 2.39 (ivanyukite-Na-C), 2.69 (ivanyukite-K), and 2.46 g/cm³ (ivanyukite-Cu). Ivanyukite-Na-T is uniaxial (+), n_ω = 1.76(1), n_ε = 1.85(9) (589 nm), and the other minerals are isotropic, n = 1.73(1). Chemical analysis by electron microprobe gave (wt% for ivanyukite-Na-T, ivanyukite-Na-C, ivanyukite-K, and ivanyukite-Cu, respectively): Na₂O 7.46, 5.19, 0.27, and 0.17; Al₂O₃ 0.07, 0.21, 0.18, and 0.07; SiO₂ 23.75, 25.47, 23.16, and 24.80; SO₃ 0.00, 0.00, 0.00, and 0.20; K₂O 5.89, 6.34, 7.09, and 6.81; CaO 0.21, 0.14, 0.95, and 0.23; TiO₂ 38.89, 37.81, 36.14, and 38.36; MnO 0.05, 0.33, 0.68, and 0.28; FeO 0.54, 2.17, 0.37, and 0.73; CuO 0.00, 0.00, 2.21, and 6.81; SrO 0.00, 0.00, 0.19, and 0.00; Nb₂O₅ 2.99, 2.90, 3.62, and 3.02; BaO 0.14, 0.00, 0.00, and 0.00; H₂O (by the Penfield method) 19.00, 19.15, 25.00, and 21.50; total 98.99, 99.71, 99.86, and 98.97. The empirical formulae (based on Si+Al = 3 apfu) are (Na_1.82 K_0.95 Ca_0.03 Ba_0.01)_∑2.81[(Ti_3.68Nb_0.17Fe_0.06 Mn_0.01)_∑3.92(Si_2.99 Al_0.01)_∑3.00O_14.59(OH)_1.37]·7.29H₂O (ivanyukite-Na-T), (Na_1.17K_0.94Ca_0.03)_∑2.14[(Ti_3.32Fe_0.21Nb_0.15Mn_0.03)_∑3.71(Si_2.97Al_0.03)_∑3.00 O_12.89(OH)_2.87]·6.01H₂O (ivanyukite-Na-C), (K_1.16Cu_0.21Ca_0.13Na_0.07Sr_0.01)_∑1.58[(Ti_3.49Nb_0.21Mn_0.07Fe_0.04)_∑3.81(Si_2.97Al_0.03)_∑3.00 O_13.19(OH)_2.75]·9.32H₂O (ivanyukite-K), and (Cu_0.62K_0.43Na_0.04Ca_0.03)_∑1.12[(Ti_3.48Nb_0.16Fe_0.07Mn_0.03)_∑3.74(Si_2.99Al_0.01)_∑3.00O_12.88(OH)_2.88(SO₄)_0.02]·7.21H₂O (ivanyukite-Cu). Ivanyukite-Na-T is trigonal, R3m, a = 10.94(2), c = 13.97(4) Å, Z = 3. Other minerals are cubic, P4̅3m a = 7.856(6) (ivanyukite-Na-C), 7.808(2) (ivanyukite-K), and 7.850(7) Å (ivanyukite-Cu); Z = 1. The strongest lines in the powder X-ray diffraction pattern [d_bs(Å) (I_obs) hkl] are: 7.88(100) (011), 3.277(60)(014), 3.175(80)(212), 2.730(50)(220), 2.607(70)(303), 2.471(50)(124), 1.960(60)(044), 1.916(50) (135) (ivanyukite-Na-T); 7.88(100)(100), 4.53(30)(111), 3.205(80)(211), 2.774(30)(220), 2.622(40)(221, 300), 2.478(40)(310), 1.960(30)(400), 1.843(30)(330, 411) (ivanyukite-Na-C); 7.85(100)(100), 3.91(20)(200), 3.201(80) (211), 2.765(20)(220), 2.602(30)(221, 300), 2.471(40)(310), 1.951(30)(400), 1.839(30)(330, 411) (ivanyukite-K); 7.87(100)(100), 3.94(20)(200), 3.205(80)(211), 2.774(20)(220), 2.616(30)(221, 300), 2.481(30)(310), 1.960(30) (400), 1.843(30)(330, 411) (ivanyukite-Cu). The crystal structure of ivanyukite-Na-T [trigonal, R3m, a = 10.921(3), c = 13.885(4) Å, V = 1434.2(7) ų] has been solved from highly mosaic crystal and refined to R₁ = 0.147 on the basis of 723 unique observed reflections. The crystal structures of ivanyukite-group minerals are based upon a 3-dimensional framework of the pharmacosiderite type, consisting of four edge-sharing TiO₆-octahedra interlinked by SiO₄ tetrahedra. The framework has a 3-dimensional system of channels defined by 8-membered rings with an effective channel width of 3.5 Å (calculated as the distance between O atoms across the channels minus 2.7 Å). The channels are occupied by Na⁺ and K⁺ cations and H₂O molecules. The infrared spectra of the ivanyukite group minerals show 14 absorption bands caused by vibrations of Si-O and Ti-O bonds, molecular water, and (OH)⁻ groups. Ivanyukite-Na-T formed as a late-stage, hydrothermal phase of ultra-agpaitic hydrothermalites; ivanyukite-Na-C is produced by partial hydration of ivanyukite-Na-T, and both ivanyukite-K and ivanyukite-Cu are produced by partial hydration of ivanyukite-Na-T and natural cation exchange of Cu for Na near dissolved djerfisherite and chalcopyrite grains. Nomenclature of the ivanyukite group is based on the dominant extraframework cation and symmetry of the crystal structure. The minerals are named in honor of Gregory Yur’evich Ivanyuk, Russian mineralogist and petrologist, head of the Laboratory of Self-Organized Mineral Systems in the Geological Institute of the Kola Science Centre of the Russian Academy of Sciences, for his contributions to the petrology and mineralogy of banded iron-formations, alkaline, and alkaline-ultrabasic massifs.

This paper reviews the available information on the beryllium mineralogy of the different type of occurrences in the Kola Peninsula, northwest Russia. Beryllium mineralization in the region is mainly associated with alkaline and felsic rocks, which differ significantly in petrological, geochemical, mineralogical features and age. In total 28 beryllium minerals are established on the Kola Peninsula up today. Beryl is one of the ore minerals in the differentiated granite pegmatites of the Kolmozerskoe lithium deposit. A large diversity of beryllium minerals occur in the pegmatites and hydrothermal veins formed in the late stages of the Lovozero and Khibiny alkaline massifs. Most of these minerals, as leifite, lovdarite, odintsovite, sphaerobertrandite and tugtupite are rare in other environments and have unique properties. These minerals formed under conditions of extreme alkalinity and their formation was favored by abrupt changes in the alkalinity regimes. Some of minerals, as chrysoberyl in xenoliths of hornfels, genthelvite and unique intergrowth of meliphanite and leucophanite formed in contrasting geochemical fronts between felsic/intermediate and mafic rocks.

The use of mining and metallurgical waste for the production of building supplies reduces the burden on the environment and serves the sustainable development of the region’s industry at the same time. Russia has substantiated the possibility of producing ceramic construction materials of compression molding from a unique mixture of substances based on waste slag of copper–nickel productions, tailings of enrichment of apatite–nepheline ores, and ferruginous quartzites of enterprises of the Murmansk region. The effect of forming pressure (20, 50, and 100 MPa) on the properties of ceramic materials was studied. It is shown that an increase in molding pressure leads to an increase in the physical and mechanical properties of ceramic materials and to a decrease in fire shrinkage and water absorption. The use of a forming pressure of 100 MPa and a firing temperature of 1050 °C makes it possible to obtain a wall clinker brick; at a firing temperature of 1100 °C and a forming pressure of 20–100 MPa, a road clinker brick can be produced. Ceramic samples with frost resistance of more than 200 cycles were received.