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Journal Article

METAL AND MINERAL MICROINCLUSIONS IN ADAKITES FROM THE FRAMING OF THE UTANAK MASSIF ( Stanovoi superterrane, Russian Far East ) AS EVIDENCE FOR METAL ENRICHMENT IN ADAKITIC MAGMAS Available to Purchase

P.K. Kepezhinskas, N.V. Berdnikov, V.O. Krutikova
Published: 01 February 2025
Russ. Geol. Geophys. (2025) 66 (2): 127–141.
DOI: https://doi.org/10.2113/RGG20244783
...P.K. Kepezhinskas; N.V. Berdnikov; V.O. Krutikova Porphyritic amphibole–plagioclase andesites at the southern margin of the Utanak ultramafic massif (Stanovoi superterrane, Russian Far East) show low yttrium and ytterbium contents and high Sr/Y and La/Yb ratios typical of adakites. Microinclusions...
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View PDF for article title, METAL AND MINERAL <span class="search-highlight">MICROINCLUSIONS</span> IN ADAKITES FROM THE FRAMING OF THE UTANAK MASSIF ( Stanovoi superterrane, Russian Far East ) AS EVIDENCE FOR METAL ENRICHMENT IN ADAKITIC MAGMAS
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Journal Article

Monazite-(Ce) and xenotime-(Y) microinclusions in fluorapatite of the pegmatites from the Volta Grande mine, Minas Gerais state, southeast Brazil, as witnesses of the dissolution–reprecipitation process Available to Purchase

Felipe Emerson André Alves, Reiner Neumann, Ciro Alexandre Ávila, Fabiano Richard Leite Faulstich
Published: 25 June 2019
Mineralogical Magazine (2019) 83 (4): 595–606.
DOI: https://doi.org/10.1180/mgm.2019.43
...Felipe Emerson André Alves; Reiner Neumann; Ciro Alexandre Ávila; Fabiano Richard Leite Faulstich Abstract Fluorapatite with monazite-(Ce) and xenotime-(Y) microinclusions occurs in the lithium–caesium–tantalum pegmatite body A of the Volta Grande mine, Minas Gerais state, Southeast Brazil...
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View PDF for article title, Monazite-(Ce) and xenotime-(Y) <span class="search-highlight">microinclusions</span> in fluorapatite of the pegmatites from the Volta Grande mine, Minas Gerais state, southeast Brazil, as witnesses of the dissolution–reprecipitation process
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Journal Article

Alluvial-Placer Gold of Northwestern Salair: Composition, Types, and Mineral Microinclusions Available to Purchase

P.A. Nevolko, V.V. Kolpakov, G.V. Nesterenko, P.A. Fominykh
Published: 01 January 2019
Russ. Geol. Geophys. (2019) 60 (1): 67–85.
DOI: https://doi.org/10.15372/RGG2019005
... Cambrian volcanoterrigenous-carbonate rocks and ore-bearing mafic dikes. Mercury-containing gold is characteristic of beresites, but copper-bearing gold is typical of listwaenites. The relationship between corresponding grades of surface and ore gold is confirmed by the presence of microinclusions...
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View PDF for article title, Alluvial-Placer Gold of Northwestern Salair: Composition, Types, and Mineral <span class="search-highlight">Microinclusions</span>
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Journal Article

Multiple growth events in diamonds with cloudy microinclusions from the Mir kimberlite pipe: evidence from the systematics of optically active defects Available to Purchase

S.Yu. Skuzovatov, D.A. Zedgenizov, A.L. Rakevich, V.S. Shatsky, E.F. Martynovich
Published: 01 January 2015
Russ. Geol. Geophys. (2015) 56 (1-2): 330–343.
DOI: https://doi.org/10.1016/j.rgg.2015.01.024
...S.Yu. Skuzovatov; D.A. Zedgenizov; A.L. Rakevich; V.S. Shatsky; E.F. Martynovich Abstract We present new data on the main and additional optically active defects in diamonds with cloudy microinclusions from the Mir kimberlite pipe. It has been found that reshaping might have occurred either...
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View PDF for article title, Multiple growth events in diamonds with cloudy <span class="search-highlight">microinclusions</span> from the Mir kimberlite pipe: evidence from the systematics of optically active defects
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Journal Article

Composition of cloudy microinclusions in octahedral diamonds from the Internatsional’naya kimberlite pipe (Yakutia) Available to Purchase

S.Yu. Skuzovatov, D.A. Zedgenizov, V.S. Shatsky, A.L. Ragozin, K.E. Kuper
Published: 01 January 2011
Russ. Geol. Geophys. (2011) 52 (1): 85–96.
DOI: https://doi.org/10.1016/j.rgg.2010.12.007
...S.Yu. Skuzovatov; D.A. Zedgenizov; V.S. Shatsky; A.L. Ragozin; K.E. Kuper Abstract Diamond microinclusions provide the unique opportunity to study the composition of the mineral-forming medium. The paper presents the first data on the composition of cloudy microinclusions in the cores of octahedral...
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View PDF for article title, Composition of cloudy <span class="search-highlight">microinclusions</span> in octahedral diamonds from the Internatsional’naya kimberlite pipe (Yakutia)
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Journal Article

Local environment and valence state of iron in microinclusions in fibrous diamonds: X-ray absorption and Mössbauer data Available to Purchase

A.A. Shiryaev, Y.V. Zubavichus, A.A. Veligzhanin, C. McCammon
Published: 01 December 2010
Russ. Geol. Geophys. (2010) 51 (12): 1262–1266.
DOI: https://doi.org/10.1016/j.rgg.2010.11.005
... known that fibrous diamonds are rich in mineral and fluid microinclusions, and some of them may contain iron. In this study we have investigated the Fe redox state and atomic environment in fibrous diamonds from Congo and Brazil using X-ray Absorption (XAS) and Mössbauer spectroscopies. The present data...
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View PDF for article title, Local environment and valence state of iron in <span class="search-highlight">microinclusions</span> in fibrous diamonds: X-ray absorption and Mössbauer data
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Journal Article

TEM imaging and analysis of microinclusions in diamonds: A close look at diamond-growing fluids Available to Purchase

Ofra Klein-BenDavid, Richard Wirth, Oded Navon
Published: 01 February 2006
American Mineralogist (2006) 91 (2-3): 353–365.
DOI: https://doi.org/10.2138/am.2006.1864
...Ofra Klein-BenDavid; Richard Wirth; Oded Navon Abstract Fluid-bearing microinclusions in diamonds (<1 μm) provide a unique source of information on the diamond-forming medium. Transmission electron microscopy (TEM) investigation of such microinclusions enables the detailed study of their size...
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View PDF for article title, TEM imaging and analysis of <span class="search-highlight">microinclusions</span> in diamonds: A close look at diamond-growing fluids
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Journal Article

Forward modeling of calc-silicate microinclusions and fluid evolution in a graphitic metapelite, Northeast Sardinia Available to Purchase

J. A. D. Connolly, I. Memmi, V. Trommsdorff, M. Franceschelli, C. A. Ricci
Published: 01 October 1994
American Mineralogist (1994) 79 (9-10): 960–972.
...J. A. D. Connolly; I. Memmi; V. Trommsdorff; M. Franceschelli; C. A. Ricci Abstract The primary microinclusion assemblage anorthite ± margarite ± epidote occurs within garnet and rutile in a graphitic metapelite from northeast Sardinia. The existence of the microinclusion assemblage...
View PDF for article title, Forward modeling of calc-silicate <span class="search-highlight">microinclusions</span> and fluid evolution in a graphitic metapelite, Northeast Sardinia
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Barite microinclusions in the Utanak adakites: a–c – microinclusions of subhedral barite in magmatic plagioclase; d – microsegregation of barite at the boundary of albite and K-feldspar grains; e – microsegregations of platy barite (including Sr-containing one) in K-feldspar at the contact with pyrite; f – microinclusion of Sr-bearing barite in quartz–chlorite aggregate. Pl – plagioclase, Ab – albite, K-Fsp – K-feldspar, Ano – anorthoclase, Chl – chlorite, Qz – quartz, Py – pyrite, Brt – barite, Sr-Brt – Sr-containing barite.

Barite microinclusions in the Utanak adakites: a – c – microinclusions of... Available to Purchase

Published: 01 February 2025
Fig. 11. Barite microinclusions in the Utanak adakites: a – c – microinclusions of subhedral barite in magmatic plagioclase; d – microsegregation of barite at the boundary of albite and K-feldspar grains; e – microsegregations of platy barite (including Sr-containing one) in K-feldspar
Journal Article

A MICROINCLUSION OF LOWER-MANTLE ROCK AND OTHER MINERAL AND NITROGEN LOWER-MANTLE INCLUSIONS IN A DIAMOND Available to Purchase

Felix V. Kaminsky, Richard Wirth, Anja Schreiber
Published: 22 June 2015
The Canadian Mineralogist (2015) 53 (1): 83–104.
DOI: https://doi.org/10.3749/canmin.1400070
... in Table 1 . TABLE 1. LIST OF MINERAL INCLUSIONS IN DIAMOND #8-108 FROM RIO SORISO, JUINA AREA, BRAZIL Foil # Microinclusions Nanoinclusions Size, nm Note Microxenolith 3601 Nitrocohenite Fe 3 (C,N) May be nitrochalypite Fe 7 (C,N) 3 or Fe 2 (C,N) Ferropericlase (Mg,Fe)O...
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View PDF for article title, A <span class="search-highlight">MICROINCLUSION</span> OF LOWER-MANTLE ROCK AND OTHER MINERAL AND NITROGEN LOWER-MANTLE INCLUSIONS IN A DIAMOND
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Microinclusions of silver sulfides and chlorides in the Utanak adakites: a – anhedral acanthite microinclusion in clinopyroxene; b – equant Ag–Cu sulfide microinclusion in the plagioclase–K-feldspar matrix; c – acanthite microinclusion in the quartz–K-feldspar–anorthoclase matrix; d – microinclusion of Cu-bearing acanthite in titanomagnetite in the apatite–K-feldspar–chlorite matrix; e – porous intergrowth of chlorargyrite with silver and gold in the K-feldspar–plagioclase matrix; f – chlorargyrite microinclusion in the chlorite–feldspar matrix. Cpx – clinopyroxene, Chl – chlorite, Pl – plagioclase, Ano – anorthoclase, Aca – acanthite, K-Fsp – K-feldspar, Qz – quartz, Ap – apatite, Ti-Mag – titanomagnetite.

Microinclusions of silver sulfides and chlorides in the Utanak adakites: a... Available to Purchase

Published: 01 February 2025
Fig. 8. Microinclusions of silver sulfides and chlorides in the Utanak adakites: a – anhedral acanthite microinclusion in clinopyroxene; b – equant Ag–Cu sulfide microinclusion in the plagioclase–K-feldspar matrix; c – acanthite microinclusion in the quartz–K-feldspar–anorthoclase matrix
Image
Microinclusions of silver and its alloys in the Utanak adakites: a – Ag–Au microinclusion in the orthopyroxene–amphibole–chlorite matrix; b – silver microinclusion with a thin film(?) of silver sulfide; c, d – anhedral silver segregations in chlorite (c) and quartz (d); e, f – cupriferous silver microinclusions in the plagioclase–clinopyroxene matrix (e) and anorthoclase of the groundmass (f). Opx – orthopyroxene, Cpx – clinopyroxene, Amp – amphibole, Chl – chlorite, Pl – plagioclase, Ano – anorthoclase, Qz – quartz.

Microinclusions of silver and its alloys in the Utanak adakites: a – Ag–A... Available to Purchase

Published: 01 February 2025
Fig. 5. Microinclusions of silver and its alloys in the Utanak adakites: a – Ag–Au microinclusion in the orthopyroxene–amphibole–chlorite matrix; b – silver microinclusion with a thin film(?) of silver sulfide; c , d – anhedral silver segregations in chlorite ( c ) and quartz ( d ); e
Image
Composition of microinclusions (orange circles) in sample HI-180, compared to world database on microinclusions in diamonds (gray). Final members of microinclusions [Weiss et al., 2022]: 1 – silicious, 2 – low-Mg carbonatite, 3 – high-Mg carbonatite, 4 – chloride.

Composition of microinclusions (orange circles) in sample HI-180, compared ... Open Access

Published: 01 January 2025
Fig. 10. Composition of microinclusions (orange circles) in sample HI-180, compared to world database on microinclusions in diamonds (gray). Final members of microinclusions [ Weiss et al., 2022 ]: 1 – silicious, 2 – low-Mg carbonatite, 3 – high-Mg carbonatite, 4 – chloride.
Image
Microinclusions of sulfides of chalcophile and siderophile metals: a–e – galena microinclusions in association with pyrrhotite and clinopyroxene in amphibole (a), in titanomagnetite associated with anorthoclase (b), in plagioclase (c), in intergrowth with pyrrhotite and chalcopyrite in plagioclase (d), and in the quartz–anorthoclase matrix (e); f – boulangerite microinclusion in magnetite. Cpx – clinopyroxene, Amp – amphibole, Pl – plagioclase, Ano – anorthoclase, Qz – quartz, Ti-Mag – titanomagnetite, Mag – magnetite, Gn – galena, Po – pyrrhotite, Gn + Po – galena–pyrrhotite intergrowth, Ccp – chalcopyrite, Bou – boulangerite.

Microinclusions of sulfides of chalcophile and siderophile metals: a – e ... Available to Purchase

Published: 01 February 2025
Fig. 9. Microinclusions of sulfides of chalcophile and siderophile metals: a – e – galena microinclusions in association with pyrrhotite and clinopyroxene in amphibole ( a ), in titanomagnetite associated with anorthoclase ( b ), in plagioclase ( c ), in intergrowth with pyrrhotite
Image
Tungsten (a) and crocoite (b) microinclusions in plagioclase and cassiterite microinclusion in the chlorite–plagioclase matrix (c). Pl – plagioclase, Chl – chlorite, Cro – crocoite, Cst – cassiterite, W – tungsten.

Tungsten ( a ) and crocoite ( b ) microinclusions in plagioclase and cassit... Available to Purchase

Published: 01 February 2025
Fig. 10. Tungsten ( a ) and crocoite ( b ) microinclusions in plagioclase and cassiterite microinclusion in the chlorite–plagioclase matrix ( c ). Pl – plagioclase, Chl – chlorite, Cro – crocoite, Cst – cassiterite, W – tungsten.
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Photomicrographs of polished slabs of microinclusion-bearing fibrous diamonds. (a) ‘fully fibrous’ cuboid diamond from Canada (exact mine is unknown). The concentric layers define variation in microinclusion-density from center to edge. In this specific diamond (and in most fibrous diamonds) the composition of the microinclusions is homogeneous and does not show chemical radial variation, indicating it formed in pulses, but during a single growth event. (b) ‘cloudy’ diamond from Finsch, South Africa (Weiss and Goldstein 2018); with a cuboid internal zone of fibrous growth that is full of microinclusions, overgrown by a clear octahedral outer zone. (c) ‘coated’ diamond from Kankan, Guinea (Weiss et al. 2009); consists of an octahedral non-fibrous monocrystalline (NFMC) core and a fibrous coat. In this diamond, the concentric layers in the coat are characterized by different microinclusion compositions (i.e., a zoned diamond). (d) high magnification image of the fibrous coat in (c), showing thousands of microinclusions (black dots). See section ‘Morphology and Texture’ and ‘Homogeneity and zoning in individual diamonds’ for additional details.

Photomicrographs of polished slabs of microinclusion-bearing fibrous diamon... Open Access

Published: 01 July 2022
Figure 1. Photomicrographs of polished slabs of microinclusion-bearing fibrous diamonds. ( a ) ‘fully fibrous’ cuboid diamond from Canada (exact mine is unknown). The concentric layers define variation in microinclusion-density from center to edge. In this specific diamond (and in most fibrous
Image
Microinclusions of Cu–Ag–Au alloys in partly chloritized amphibole (a), plagioclase (b–d), feldspar (plagioclase + K-feldspar) aggregate (e), and the quartz–K-feldspar matrix (f). Amp – amphibole, Chl – chlorite, Pl – plagioclase, K-Fsp – K-feldspar, Qz – quartz.

Microinclusions of Cu–Ag–Au alloys in partly chloritized amphibole ( a ), p... Available to Purchase

Published: 01 February 2025
Fig. 4. Microinclusions of Cu–Ag–Au alloys in partly chloritized amphibole ( a ), plagioclase ( b – d ), feldspar (plagioclase + K-feldspar) aggregate ( e ), and the quartz–K-feldspar matrix ( f ). Amp – amphibole, Chl – chlorite, Pl – plagioclase, K-Fsp – K-feldspar, Qz – quartz.
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Microinclusions of precious-metal/chalcophile- and siderophile-element mineral composites in the Utanak adakites: a – Zn–Cu–In–Au–Ag composites in amphibole, b – In–Cu–Ag–Au composites in plagioclase, c – Mn–Ni–Cu–Zn composites in plagioclase, d – Zn–Ag–Cu–Au composites in the quartz–K-feldspar matrix, e – In–Ag–Cu–Ni–Mo composites in chlorite; f – Zn–Ag microinclusion in magnetite associated with chlorite and apatite. Amp – amphibole, Chl – chlorite, Pl – plagioclase, K-Fsp – K-feldspar, Qz – quartz, Mag – magnetite, Ap – apatite.

Microinclusions of precious-metal/chalcophile- and siderophile-element mine... Available to Purchase

Published: 01 February 2025
Fig. 6. Microinclusions of precious-metal/chalcophile- and siderophile-element mineral composites in the Utanak adakites: a – Zn–Cu–In–Au–Ag composites in amphibole, b – In–Cu–Ag–Au composites in plagioclase, c – Mn–Ni–Cu–Zn composites in plagioclase, d – Zn–Ag–Cu–Au composites
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Microinclusions of platinum in the Utanak adakites: a, b – native platinum with Fe (a) or Fe and Cu (b) impurities in plagioclase; c – platinum with Fe impurity in plagioclase associated with clinopyroxene and titanomagnetite; d, e – platinum with Fe impurity in the chlorite–plagioclase (d) and feldspar (e) matrix; f – platinum with Fe and Mn impurities at the contact of silicate spherule with the chlorite–K-feldspar matrix. Cpx – clinopyroxene, Chl – chlorite, Pl – plagioclase, K-Fsp – K-feldspar, Ti-Mag – titanomagnetite.

Microinclusions of platinum in the Utanak adakites: a , b – native plati... Available to Purchase

Published: 01 February 2025
Fig. 7. Microinclusions of platinum in the Utanak adakites: a , b – native platinum with Fe ( a ) or Fe and Cu ( b ) impurities in plagioclase; c – platinum with Fe impurity in plagioclase associated with clinopyroxene and titanomagnetite; d , e – platinum with Fe impurity in the chlorite
Journal Article

Spectroscopic and physicochemical study of the color grain-size effect in lazurite-type minerals Available to Purchase

Vladimir L. Tauson, Anatoly N. Sapozhnikov, Sergey V. Lipko, Yuri L. Mikhlin, Boris S. Danilov, Roman Yu. Shendrik, Dmitry O. Sofich, Kirill Yu. Arsentev, Olga Yu. Belozerova
Published: 05 June 2025
American Mineralogist (2025)
DOI: https://doi.org/10.2138/am-2024-9656
... and bending modes, and the presence of H 2 O, CO 2 and CO 3 2 − in the structures of the initial samples. TA and SEM data revealed significant development of calcite microinclusions in LTM samples. We propose a model according to which in relatively large grains calcite microinclusions and subgrain boundary...
View PDF for article title, Spectroscopic and physicochemical study of the color grain-size effect in lazurite-type minerals
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