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Journal Article
Published: 01 May 2021
American Mineralogist (2021) 106 (5): 669–671.
... of equations of state for mantle olivines and diamond inclusions . Physics and Chemistry of Minerals , 45 , 95 – 113 . Angel , R.J. , Mazzucchelli , M.L. , Alvaro , M. , and Nestola , F. ( 2017b ) EosFit-Pinc: A simple GUI for host-inclusion elastic thermobarometry . American...
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Journal Article
Published: 01 February 2021
American Mineralogist (2021) 106 (2): 165–173.
...Anton Shatskiy; Anton V. Arefiev; Ivan V. Podborodnikov; Konstantin D. Litasov Abstract To clarify the effect of water on carbonate-silicate liquid immiscibility in the diamond stability field, we performed experiments in the system KAlSi 3 O 8 -CaMgSi 2 O 6 -NaAlSi 2 O 6 -CaMg(CO 3 ) 2 under...
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Journal Article
Published: 01 February 2021
American Mineralogist (2021) 106 (2): 301–308.
... ( I ) ( hkl )]: 1.992 (100) (102), 1.718 (55) (110), 2.978 (53) (100), 2.608 (35) (101), and 1.304 (17) (202). Crowningshieldite was found as part of a multiphase inclusion in a gem-quality, colorless, type IIa (containing less than ~5 ppm N) diamond from the Letseng mine, Lesotho. The inclusion...
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Journal Article
Published: 01 January 2021
American Mineralogist (2021) 106 (1): 28–37.
...Greta Rustioni; Andreas Audétat; Hans Keppler Abstract A variety of experimental techniques have been proposed to measure the composition of aqueous fluids in high-pressure experiments. In particular, the “diamond trap method,” where the fluid is sampled in the pore space of diamond powder...
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Journal Article
Published: 01 January 2021
American Mineralogist (2021) 106 (1): 38–43.
...Frank E. Brenker; Fabrizio Nestola; Lion Brenker; Luca Peruzzo; Jeffrey W. Harris Abstract Earth's lower mantle most likely mainly consists of ferropericlase, bridgmanite, and a CaSiO 3- phase in the perovskite structure. If separately trapped in diamonds, these phases can be transported to Earth's...
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Journal Article
Published: 01 January 2021
American Mineralogist (2021) 106 (1): 54–68.
...Roy Bassoo; Kenneth S. Befus; Peng Liang; Steven L. Forman; Glenn Sharman Abstract Diamonds have long been mined from alluvial terrace deposits within the rainforest of Guyana, South America. No primary kimberlite deposits have been discovered in Guyana, nor have there been previous studies...
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Journal Article
Published: 01 January 2021
American Mineralogist (2021) 106 (1): 44–53.
...Konstantin D. Litasov; Hiroyuki Kagi; Tatyana B. Bekker; Yoshiki Makino; Takafumi Hirata; Vadim V. Brazhkin Abstract Taking into account recent publications, we provide additional comprehensive evidence that type Ib cuboctahedral diamonds and some other microcrystalline diamonds from Kamchatka...
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Journal Article
Journal: Geology
Published: 10 December 2020
Geology (2021) 49 (4): 438–441.
... inherent to the studies of cratonic diamonds. In this study, we addressed the mass imbalance problem in an alternative setting, where parts of oceanic lithosphere are broken off during subduction and then imbricated below the continent to form CLM ( Fig. 1A ). This scenario follows closely what has...
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Journal Article
Published: 25 November 2020
Mineralogical Magazine (2020) 84 (6): 949–958.
... maximum, position and intensity). Extremely metamict zircon cores (Domain I) host inclusions of low-pressure minerals (quartz and graphite) and the outer mantles (Domain III) are populated by ultrahigh-pressure relicts (diamond and coesite), whereas inner mantles (Domain II) and overgrowth rim zones...
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Journal Article
Published: 01 October 2020
Russ. Geol. Geophys. (2020) 61 (10): 1065–1074.
...E.M. Galimov; F.V. Kaminsky; G.A. Karpov; S.N. Shilobreeva; V.S. Sevast’yanova; S.A. Voropaev; L.P. Anikin; R. Wirth; G.K. Khachatryan; V.V. Saraikin Abstract —We have studied volcanogenic diamonds in the context of a discussion of their genesis, including some assumption on their artificial origin...
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Journal Article
Published: 01 July 2020
American Mineralogist (2020) 105 (7): 984–991.
.... The investigation of mineral inclusions in diamond confirms this prediction, but there is reported evidence of other majorite-bearing lithologies, intermediate between peridotitic and eclogitic, present in the mantle transition zone. If these lithologies are derived from olivine-free pyroxenites, then at mantle...
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Journal Article
Journal: Elements
Published: 01 June 2020
Elements (2020) 16 (3): 167–172.
... evolution of our planet. Natural inclusions trapped in diamonds, xenoliths, and erupted magmas provide unique windows into the redox conditions of the deep Earth, and reveal evidence for heterogeneities in the mantle’s oxidation state. By examining the natural rock record, we assess how redox boundaries...
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Journal Article
Published: 01 May 2020
American Mineralogist (2020) 105 (5): 627–651.
... of stars less than ~8 solar masses. The significant transfer of 12 C to the surface during TDU episodes may ultimately produce a star in which C/O > 1—an environment in which diamond, graphite, and/or carbide grain formation is favored. Depending on the variable and evolving ratio of C/O, which may...
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Journal Article
Published: 01 May 2020
Russ. Geol. Geophys. (2020) 61 (5-6): 663–674.
...A.G. Sokol; A.A. Tomilenko; T.A. Bul’bak; I.A. Sokol; P.A. Zaikin; N.V. Sobolev Abstract —Experimental modeling in the C–O–H, C–O–H–N, and peridotite–C–O–H–N systems, combined with analyses of fluid inclusions in natural diamonds, is used to reconstruct the compositions of fluids that can be stable...
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Journal Article
Published: 01 May 2020
Russ. Geol. Geophys. (2020) 61 (5-6): 634–649.
...N.V. Sobolev; Yu.V. Seryotkin; A.M. Logvinova; A.D. Pavlushin; S.S. Ugap’eva Abstract —The orientation of 76 mineral inclusions represented by olivine (25 inclusions), pyrope (13 inclusions), and magnesiochromite (38 inclusions) was measured in 16 diamond samples from the major primary diamond...
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Journal Article
Journal: Elements
Published: 01 April 2020
Elements (2020) 16 (2): 105–110.
.... ( Chopin 1984 ; Smith 1984 ) and diamond ( Sobolev and Shatsky 1990 ). More generally, RS has helped identify pressure–temperature ( P–T ) conditions of mineral formation, with direct implications for tectonic models. For example, explaining how coesite and diamond formed and were preserved in ultrahigh...
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Journal Article
Published: 01 April 2020
American Mineralogist (2020) 105 (4): 498–509.
...Erik M. Galimov; Felix V. Kaminsky; Svetlana N. Shilobreeva; Vyacheslav S. Sevastyanov; Sergei A. Voropaev; Galina K. Khachatryan; Richard Wirth; Anja Schreiber; Vladimir V. Saraykin; Gennady A. Karpov; Leonid P. Anikin Abstract Approximately 700 diamond crystals were identified in volcanic (mainly...
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