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pertsevite

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Journal Article
Published: 01 July 2010
American Mineralogist (2010) 95 (7): 953–958.
...Irina O. Galuskina; Luisa Ottolini; Milen Kadiyski; Thomas Armbruster; Evgeny V. Galuskin; Piotr Dzierżanowski; Antoni Winiarski Abstract Pertsevite-(OH), end-member formula Mg 2 (BO 3 )(OH), is a new mineral found in a ludwigite-kotoite magnesian skarn from the Snezhnoye deposit in Sakha-Yakutia...
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Journal Article
Published: 01 October 2008
European Journal of Mineralogy (2008) 20 (5): 951–964.
...Irina O. Galuskina; Milen Kadiyski; Thomas Armbruster; Evgeny V. Galuskin; Nikolai N. Pertsev; Piotr Dzierżanowski; Roman Wrzalik Abstract Si-bearing, OH-dominant pertsevite Mg 2 (BO 3 ) 1- x (SiO 4 ) x (OH,F) 1- x ( x = 0.2–0.3) from contact-metasomatic kotoitites and kotoite marbles at East...
FIGURES | View All (6)
Journal Article
Published: 01 November 2003
European Journal of Mineralogy (2003) 15 (6): 1007–1018.
...Werner SCHREYER; Thomas ARMBRUSTER; Heinz-Jürgen BERNHARDT; Olaf MEDENBACH Abstract Pertsevite is a new Mg borate from a contact-metasomatic kotoite marble from the region east of Verkhoyansk, Sakha-Yakutia, northeastern Siberia. The end member is defined as Mg 2 BO 3 F, which is the composition...
FIGURES | View All (9)
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Classification diagram forsterite: <span class="search-highlight">pertsevite</span>-(OH)–<span class="search-highlight">pertsevite</span>-(F). 1 = pert...
Published: 01 July 2010
F igure 2. Classification diagram forsterite: pertsevite-(OH)–pertsevite-(F). 1 = pertsevite-(F) from Nalednoye (type locality, Schreyer et al. 2003 ), 2 = pertsevite-(F) from Titovskoye ( Schreyer et al. 2007 ), 3 = pertsevite-(OH) from Snezhnoye (this study and Galuskina et al. 2008 ), 4
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Triangular classification diagram Mg 2 SiO 4  – <span class="search-highlight">pertsevite</span> Mg 2 BO 3 F – “p...
Published: 01 October 2008
Fig. 3. Triangular classification diagram Mg 2 SiO 4 – pertsevite Mg 2 BO 3 F – “pertsevite-OH” Mg 2 BO 3 OH. 1 – pertsevite from Nalednoye (type locality, Schreyer et al ., 2003 ), 2 – pertsevite from Titovskoye ( Schreyer et al ., 2008 ), 3 – “pertsevite-OH” from Snezhnoye (A, B series
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Compositional variations of <span class="search-highlight">pertsevite</span> in diagrams Si  pfu  –B  pfu  (A), S...
Published: 01 October 2008
Fig. 4. Compositional variations of pertsevite in diagrams Si pfu –B pfu (A), Si pfu – OH pfu (calculated) (B) and Si – F pfu (C). Arrow in B indicates a general trend of compositional variation for OH-dominant pertsevite. Arrow 1 – compositional trend of pertsevite from Gonochan
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Paragenetic relationship of OH-dominant <span class="search-highlight">pertsevite</span> with coexisting minerals...
Published: 01 October 2008
Fig. 2. Paragenetic relationship of OH-dominant pertsevite with coexisting minerals: numbers of point analyses by electron-microprobe refer to data in Tables 1 to 4 . A) – clinohumite with forsterite relics replaced by pertsevite; B) – pertsevite partly replacing a xenomorphic grain
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Join of binary solid solution between <span class="search-highlight">pertsevite</span> and forsterite end members...
Published: 01 November 2003
Fig. 8. Join of binary solid solution between pertsevite and forsterite end members. The underlying ionic substitutions are indicated at the bottom. Note the analyzed range of pertsevite compositions in thin section B-1048 (heavy black bar). We propose to use the name silicatian pertsevite
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Backscattered electron (BSE) picture of <span class="search-highlight">pertsevite</span> (P, darker grey) partial...
Published: 01 November 2003
Fig. 1. Backscattered electron (BSE) picture of pertsevite (P, darker grey) partially replacing clinohumite (C, lighter grey). The still lighter grey mineral with cleavage at the top contacting only pertsevite is calcite.
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BSE picture of a chemically heterogeneous crystal of <span class="search-highlight">pertsevite</span> (center) in...
Published: 01 November 2003
Fig. 2. BSE picture of a chemically heterogeneous crystal of pertsevite (center) in contact with an aggregate of ludwigite needles (to the left). The lighter colored portions of pertsevite (e.g. near the center cross) have relatively high Si/B, the darker ones near ludwigite lower Si/B ratios
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Selected interatomic distances for <span class="search-highlight">pertsevite</span>.
Published: 01 November 2003
Table 4. Selected interatomic distances for pertsevite.
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Atomic coordinates and isotropic displacement parameters for <span class="search-highlight">pertsevite</span>.
Published: 01 November 2003
Table 3. Atomic coordinates and isotropic displacement parameters for pertsevite.
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Geological sketch of the Middle Dogdo River region: 1 – Quaternary alluvial...
Published: 01 October 2008
– main fractures; 7 – deposits, in which pertsevite was described: T – Titovskoye (67.5° N, 139.1° E), N – Nalednoye (pertsevite type locality, 67.4° N, 138.5° E), S – Snezhnoye (67.6° N, 138.7° E). Index map of Russia with localities 1 (Middle Dogdo River territory) and 2 (Gonochan) is shown
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Electron microprobe analyses of <span class="search-highlight">pertsevite</span> from sample B-1048.
Published: 01 November 2003
Table 1. Electron microprobe analyses of pertsevite from sample B-1048.
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Parameters for X-ray data collection and crystal structure refinement of pe...
Published: 01 November 2003
Table 2. Parameters for X-ray data collection and crystal structure refinement of pertsevite.
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Electron microprobe analyses of minerals coexisting with <span class="search-highlight">pertsevite</span> (sample...
Published: 01 November 2003
Table 6. Electron microprobe analyses of minerals coexisting with pertsevite (sample B-1048).
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A. Distribution of MgO octahedra in <span class="search-highlight">pertsevite</span>. The structure of the minera...
Published: 01 October 2008
Fig. 6. A. Distribution of MgO octahedra in pertsevite. The structure of the mineral is based on a hexagonal closest packing of anions (O, OH, F), in which Mg occupies ½ of the octahedral voids. Projected along c = 4.59 Å, the structure consists of two symmetry equivalent layers. The lower
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Photomicrograph of thin section B-1048 using crossed nicols. In the center ...
Published: 01 November 2003
Fig. 3. Photomicrograph of thin section B-1048 using crossed nicols. In the center a large, north-south elongated crystal of twinned clino-humite (C) can be seen, which is peripherally replaced by pertsevite (P). This may partly be recognized, along the left rim of clinohumite by smalls crystals
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FTIR spectra of <span class="search-highlight">pertsevite</span>-(OH): ( a ) 400–1600 cm −1  region, ( b ) 3450–3...
Published: 01 July 2010
F igure 3. FTIR spectra of pertsevite-(OH): ( a ) 400–1600 cm −1 region, ( b ) 3450–3750 cm −1 , the OH stretching region.
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<span class="search-highlight">Pertsevite</span>-(OH) (Pv) associated with ludwigite (Ldw), kotoite (Kot), REE-be...
Published: 01 July 2010
F igure 1. Pertsevite-(OH) (Pv) associated with ludwigite (Ldw), kotoite (Kot), REE-bearing sakhaite (Skh), calcite (Cal), BSE image, low vacuum, 0.3 Torr.