Abstract The new eudialyte-group mineral amableite-(Ce), ideally Na 15 [(Ce 1.5 )Mn 3 ]Mn 2 Zr □Si[Si 24 O 69 (OH) ](OH) ⋅H O, was discovered in a peralkaline pegmatite at Saint-Amable Sill, Montérégie, Québec, Canada. associated minerals are albite, microcline, aegirine, serandite, natrolite, yofortierite, and an unidentified titanosilicate forming minute grains. Amableite-(Ce) occurs as yellow equant or thick tabular crystals up to mm across. observed crystal forms {0001}; the subordinate...

Abstract Natural phosphides - the minerals containing phosphorus in a redox state lower than zero – are common constituents of meteorites but virtually unknown on Earth. Herein we present first rich occurrence iron-nickel terrestrial origin. Phosphide-bearing rocks exposed three localities surroundings Dead Sea, Levant: northern Negev Desert, Israel and Transjordan Plateau, south Amman, Jordan. Seven from ternary Fe-Ni-P system have been identified with five them, NiP 2 , Ni 5 P 4 P, FeP...

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Abstract Mariakrite is a new mineral in the hydrotalcite supergroup, and member of novel family layered double hydroxides, or LDH. It first reported LDH with dithioferrate, [Fe3+S2]− role an interlayer anion, cementitious Ca-aluminate (AFm phase) intercalated sulfide, sulfide-intercalated completely solved crystal structure. was discovered late hydrothermal assemblages confined to pyrometamorphic lithologies Hatrurim Formation, Negev Desert on Israeli side Dead Sea. The forms saber-like...

Abstract Germanium is a classic trace element that rarely forms its own minerals but plays significant role in geochemical and cosmochemical classification schemes. The behavior of this very contrasting, depending on the redox environment sulfur activity geosystems. Siderophile germanium, form native germanides, has been reported several terrestrial meteoritic occurrences, majority these phases have poorly characterized. In study, we report discovery Ni3Ge, new germanide mineral, named...

Abstract Nacareniobsite-(Nd), Ca2(CaNd)Na3Nb(Si2O7)2(OF)F2, is a new rinkite-group (seidozerite-supergroup) TS-block mineral from the Darai-Pioz alkaline massif, Tien-Shan mountains, Tajikistan. It occurs as prismatic isolated grains up to 0.3 mm long and 0.03 thick in quartz-pectolite aggregate silexite-like peralkaline pegmatite. Associated minerals are reedmergnerite, leucosphenite, baratovite, aegirine, orlovite, sokolovaite, mendeleevite-(Ce), odigitriaite, pekovite, zeravshanite,...

The Ga 4 GeO 8 compound has attracted sufficient attention as an advanced optical material and host matrix for near‐infrared phosphors. A complex study (scanning electron microscopy, energy dispersive X‐Ray spectroscopy, powder diffraction, lattice dynamics calculations, Raman spectroscopy up to 600 °C 30 GPa) is presented on the synthetic β ‐Ga compound. crystals (up 200 μm in size) are synthesized under hydrothermal conditions (600/650 °C, 100 MPa) at temperatures sufficiently lower than...

Allabogdanite, (Fe,Ni)2P, is a new mineral from the Onello iron meteorite (Ni-rich ataxite). It occurs as thin lamellar crystals disseminated in plessite. Associated minerals are nickelphosphide, schreibersite, awaruite, and graphite. Crystals of mineral, up to 0.4 × 0.1 0.01 mm, flattened on (001) with dominant {001} faces, other faces that probably {110} {100}. Mirror twinning resembling gypsum common, possible twin composition plane {110}. light straw-yellow bright metallic luster....

We herein describe a tricyclic phosphine with previously unreported tris(homoadamantane) cage architecture. That water-soluble, air- and thermally stable ligand, 1,4,7-triaza-9-phosphatricyclo[5.3.2.14,9]tridecane (hereinafter referred to as CAP) exhibits unusual chemical behavior toward gold compounds: it readily reduces Au(III) Au(0), promotes oxidative dissolution of nanocrystalline gold(0) the formation water-soluble trigonal CAP–Au(I) complexes, displaces cyanide from [Au(CN)2]−...

Abstract This paper is a first detailed report of natural hexagonal solid solutions along the join Fe2P–Ni2P. Transjordanite, Ni2P, Ni-dominant counterpart barringerite (a low-pressure polymorph Fe2P), new mineral. It was discovered in pyrometamorphic phosphide assemblages Hatrurim Formation (the Dead Sea area, Southern Levant) and named for occurrence on Transjordan Plateau, West Jordan. Later on, mineral confirmed Cambria meteorite (iron ungrouped, fine octahedrite), it likely occurs CM2...

Abstract. This is the initial paper in a pair of articles devoted to silicate minerals from fumaroles Tolbachik volcano (Kamchatka, Russia). These papers contain first systematic data on mineralization fumarolic genesis. In this article nesosilicates (forsterite, andradite and titanite), cyclosilicate (a Cu,Zn-rich analogue roedderite), inosilicates (enstatite, clinoenstatite, diopside, aegirine, aegirine-augite, esseneite, “Cu,Mg-pyroxene”, wollastonite,...

LHT-9, a layered hydrazinium titanate with an interlayer spacing of ~9 Å, is new nanohybrid compound combining the redox functionality hydrazine, ion-exchange properties titanate, large surface area quasi-two-dimensional crystallites, Brønsted acidity, and occurrence titanyl bonds. ideally formulated as (N(2)H(5))(1/2)Ti(1.87)O(4), relates to family lepidocrocite-type titanates. It possesses high uptake capacity ~50 elements periodic table. Irreversibility reductive adsorption allows LHT-9...

Abstract A new mineral katiarsite, ideally KTiO(AsO 4 ), occurs in sublimates of the Arsenatnaya fumarole at Second scoria cone Northern Breakthrough Great Tolbachik Fissure Eruption, volcano, Kamchatka, Russia. It is associated with hatertite, bradaczekite, johillerite, yurmarinite, tilasite, arsmirandite, hematite, tenorite, As-bearing orthoclase, fluorophlogopite and aphthitalite. Katiarsite as long prismatic to acicular, typically sword-like, crystals up 3 μm×10μm×50 μm size, rarely 0.15...

Abstract Cyclophosphates are a class of energy-rich compounds whose hydrolytic decomposition (ring opening) liberates energy that is sufficient for initiation biomimetic phosphorylation reactions. Because that, cyclophosphates might be considered as likely source reactive prebiotic phosphorus on early Earth. A major obstacle toward adoption this hypothesis have so far not been encountered in nature. We herein report the discovery these minerals terrestrial environment, at Dead Sea basin...