 | Plá Cid, J., Nardi, L.V.S., Plá Cid, C., Enrique Gisbert, P., Balzaretti, N.M. (2014) Acid compositions in a veined-lower mantle, as indicated by inclusions of (K,Na)-Hollandite+SiO2 in diamonds. Lithos, 196. 42-53 doi:10.1016/j.lithos.2014.02.019 | Journal (article/letter/editorial) | | Alegre, RS, Brazil Departamento Nacional de Produção Mineral, 88.020-180 Florianópolis, SC, Brazil Laboratório...Eletrônica (LCME-UFSC), 88.040-900 Florianópolis, SC, Brazil d Facultat de Geologia, Universitat de Barcelona...de Física, UFRGS, 91-501-970 Porto Alegre, RS, Brazil b c a r t i c l e i n f o Article history: Received...Hollandites Juína diamonds Lower mantle Granites a b s t r a c t Diamonds from Juína area, Brazil, are known...diamonds from Juininha alluvial deposits, part of the Juína province, and we have found for the first time in |  | Bulanova, Galina P., Walter, Michael J., Smith, Chris B., Kohn, Simon C., Armstrong, Lora S., Blundy, Jon, Gobbo, Luiz (2010) Mineral inclusions in sublithospheric diamonds from Collier 4 kimberlite pipe, Juina, Brazil: subducted protoliths, carbonated melts and primary kimberlite magmatism. Contributions to Mineralogy and Petrology, 160 (4) 489-510 doi:10.1007/s00410-010-0490-6 | Journal (article/letter/editorial) | | sublithospheric diamonds from Collier 4 kimberlite pipe, Juina, Brazil: subducted protoliths, carbonated...carbonated melts and primary kimberlite magmatism Galina P. Bulanova • Michael J. Walter • Chris B. Smith •... Armstrong Jon Blundy • Luiz Gobbo • Received: 4 June 2009 / Accepted: 11 January 2010 / Published...of diamonds from the Cretaceous Collier 4 kimberlite pipe, Juina, Brazil, that are predominantly nitrogen-free...CaTiSi-perovskite inclusion (Group 2) is close to the kimberlite emplacement time (93.1 ± 1.5 Ma). Group 3 diamonds |  | | Journal (article/letter/editorial) | | of carbonatitic melts. In the Juina kimberlite province of Brazil, all three suites have been found in...published age data for a Ca–Si–Ti inclusion, the Juina (Brazil) sublithospheric inclusions document a series of...Fe)O in the same diamond from the Koffiefontein kimberlite, South Africa. Scott-Smith et al. (1984) pointed...of inclusions in diamonds from the Monastery kimberlite, South Africa, with the composition of majoritic...discoveries particularly seen in the: Juina area, Brazil (Wilding, 1990; Harte and Harris, 1994; Harte et |  | Kaminsky, Felix V., Sablukov, Sergei M., Belousova, Elena A., Andreazza, Paulo, Tremblay, Mousseau, Griffin, William L. (2010) Kimberlitic sources of super-deep diamonds in the Juina area, Mato Grosso State, Brazil. Lithos, 114 (1) 16-29 doi:10.1016/j.lithos.2009.07.012 | Journal (article/letter/editorial) | | super-deep diamonds in the Juina area, Mato Grosso State, Brazil Felix V. Kaminsky a,b,⁎, Sergei M. Sablukov...Available online 26 July 2009 Keywords: Kimberlite Diamond Brazil Juina a b s t r a c t The Juina diamond...origins from the upper-mantle and transition zone. Field observations and petrographic studies have identified...Cr2O3. Picroilmenite contains 6–14 wt.% MgO and 0.2–4 wt.% Cr2O3. Manganoan ilmenite has less than 3 wt...28295 with εHf = 5.9–8.3, and lies on the average kimberlite trend between depleted mantle and CHUR. The previously |  | | Journal (article/letter/editorial) | | repeatedly been reported in super-deep diamonds from Brazil and Guinea (Stachel et al. 2000; Hayman et al....corresponding to the deep mantle and from Rio Soriso, Brazil. the core (Minobe et al. 2015; Litasov et al. 2017)...deep interior. The “missing” carbonitride [Fe9(N,C)4] in association with iron carbide (Fe7C3), nitrogen...crystalline phases, which diamond from Rio Soriso, Brazil. The phases identified in this can capture nitrogen...sublithospheric diamonds from Collier 4 kimberlite pipe, Juina, Brazil: Subducted protoliths, carbonated |  | Hunt, Lucy, Stachel, Thomas, Morton, Roger, Grütter, Herman, Creaser, Robert A. (2009) The Carolina kimberlite, Brazil — Insights into an unconventional diamond deposit. Lithos, 112. 843-851 doi:10.1016/j.lithos.2009.04.018 | Journal (article/letter/editorial) | | / l o c a t e / l i t h o s The Carolina kimberlite, Brazil — Insights into an unconventional diamond...a c t The diamondiferous Carolina kimberlite (Rondônia State, Brazil) is located within Proterozoic basement...(G10) garnets in heavy media concentrate from the kimberlite. Diamonds from Carolina have high nitrogen contents...grains derived from both surficial samples and kimberlite core indicates two distinct model geotherms:...“Slave type” geotherm (38 mW/m2). Grains from the kimberlite drill core exclusively reflect the lower model |  | | Journal (issue) | | shipping. Subscriptions are $79.99 for one year (4 issues) in the U.S. and $99.99 elsewhere. Canadian...the submission of articles on all aspects of the field. Please see the Author Guidelines at gia.edu/gemsgemology...published in G&G are also welcome. Please note that Field Reports, Lab Notes, Gem News International, Micro-World...geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production...mostly elusive. Although economically viable kimberlite pipes have been discovered in recent years, the |  | | Journal (article/letter/editorial) | | isotope composition in diamonds from São-Luis (Brazil): Evidence for heterogenous carbon reservoir in...alluvial deposits of the São-Luis River (Juina, Brazil). Syngenetic inclusions were represented by phases...the expected “normal” mantle. The Juina kimberlite field in Brazil is a well-known source of alluvial sublithospheric...Chemical Geology 363 (2014) 114–124 deposits (Juina, Brazil), we investigated variations in C isotopes in diamonds...370 to 7000 cm−1, with 100 scans at a resolution of 4 cm−1. The contents of N-centres were calculated following |  | | Journal (article/letter/editorial) | | within the thermal aureole surrounding the pooled kimberlite magma in the mantle prior to eruption. Crystallization...by stresses in the mantle immediately prior to kimberlite eruption. The websterite diamond suite is thus...megacryst crystallization, broadly coeval with the kimberlite magmatic event in the mantle. Experimental studies...at Premier, which is one of the world’s major kimberlite sources of blue diamonds. Formation of fibrous...with eruption of the host kimberlite, can also be linked to the kimberlite magmatic event in the mantle |  | Zedgenizov, D. A., Shatskiy, A., Ragozin, A. L., Kagi, H., Shatsky, V. S. (2014) Merwinite in diamond from Sao Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist, 99 (2) 547-550 doi:10.2138/am.2014.4767 | Journal (article/letter/editorial) | | 2014 Letter Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment...Science, University of Tokyo, Tokyo 113-0033, Japan 4 A.P. Vinogradov Institute of Geochemistry, Russian...Russia 1 Abstract Diamonds from Juina province, Brazil, and some others localities reveal the existence...from the São Luiz river alluvial deposits (Juina, Brazil). In addition, the diamond contains inclusions...Method The São Luiz river alluvial deposits (Juina, Brazil) are a well-known source of sublithospheric diamonds |  | Nestola, Fabrizio, Burnham, Antony D., Peruzzo, Luca, Tauro, Leonardo, Alvaro, Matteo, Walter, Michael J., Gunter, Mickey, Anzolini, Chiara, Kohn, Simon C. (2016) Tetragonal Almandine-Pyrope Phase, TAPP: finally a name for it, the new mineral jeffbenite. Mineralogical Magazine, 80 (7) 1219-1232 doi:10.1180/minmag.2016.080.059 | Journal (article/letter/editorial) | | GUNTER5, CHIARA ANZOLINI1 AND SIMON C. KOHN2 1 2 3 4 5 6 Dipartimento di Geoscienze, Università di Padova...diamond from São Luiz river, Juina district of Mato Grosso, Brazil. Its density is 3.576 g/cm3 and its microhardness...647, 100, 2 0 4; 1.625, 44, 3 2 5; 2.881, 24, 2 1 1; 2.220, 19, 2 0 6; 1.390, 13, 4 2 4; 3.069, 11, 2...2 0 2; 2.056, 11, 2 2 4; 1.372, 11, 2 0 12. The structural formula of jeffbenite can be written as (M...pressure/temperature conditions, diamond, São Luiz river, Brazil. Introduction DIAMONDS are able to preserve high-pressure |  | Burnham, A.D., Bulanova, G.P., Smith, C.B., Whitehead, S.C., Kohn, S.C., Gobbo, L., Walter, M.J. (2016) Diamonds from the Machado River alluvial deposit, Rondônia, Brazil, derived from both lithospheric and sublithospheric mantle. Lithos, 265. 199-213 doi:10.1016/j.lithos.2016.05.022 | Journal (article/letter/editorial) | | the Machado River alluvial deposit, Rondônia, Brazil, derived from both lithospheric and sublithospheric...Walter PII: DOI: Reference: S0024-4937(16)30107-4 doi: 10.1016/j.lithos.2016.05.022 LITHOS 3940 To...the Machado River alluvial deposit, Rondônia, Brazil, derived from both lithospheric and sublithospheric...from the Machado River alluvial deposit, Rondônia, Brazil, derived from both lithospheric and sublithospheric...Tinto Desenvolvimentos Minerais Ltda., Brasília, Brazil 1 (corresponding author) – present address: Research |  | Zedgenizov, Dmitry, Kagi, Hirioyuki, Ohtani, Eiji, Tsujimori, Tatsuki, Komatsu, Kazuki (2020) Retrograde phases of former bridgmanite inclusions in superdeep diamonds. Lithos, 370. 105659pp. doi:10.1016/j.lithos.2020.105659 | Journal (article/letter/editorial) | | Graduate School of Science, University of Tokyo, Japan 4 Department of Earth Science, Graduate School of Science...been found in diamonds from the Koffifontein kimberlite pipe (South Africa) and Orroroo dyke (South Australia)...localities: placer deposits and kimberlite pipes in the Juina and Machado areas in Brazil (Wilding et al., 1991;...superdeep diamonds from São-Luis river deposits (Juina, Brazil) to identify retrograde phase of former bridgmanite...boundaries between different mineral phases (Fig. 4). na The compositions of mineral inclusions in studied |  | | Journal (article/letter/editorial) | | (Davies et al., 1999, Pokhilenko et al., 2001), Brazil (Harte et al., 1999; Hutchison et al., 1999, 2001;...Australia (Tappert et al., 2005а; 2009), Arkhangel’sk kimberlite province (Sobolev et al.,1997), Siberian platform...inclusions in sublithospheric diamonds from Saõ—Luiz (Brazil) and other diamond deposits worldwide were used...majoritic garnet inclusions in Saõ-Luiz diamonds (Brazil) and other diamonds worldwide (data from Kiseeva...ultra-deep diamonds acquire a walstromite structure (Fig. 4). Rarely found are inclusions of Ca2SiO4 (larnite) |  | Thomson, A. R., , , Kohn, S. C., Bulanova, G. P., Smith, C. B., Araujo, D., Walter, M. J. (2014) Origin of sub-lithospheric diamonds from the Juina-5 kimberlite (Brazil): constraints from carbon isotopes and inclusion compositions. Contributions to Mineralogy and Petrology, 168 (6) doi:10.1007/s00410-014-1081-8 | Journal (article/letter/editorial) | | sub‑lithospheric diamonds from the Juina‑5 kimberlite (Brazil): constraints from carbon isotopes and inclusion...diamonds sourced from the Juina-5 kimberlite pipe in Southern Brazil, which contain optically identifiable...Universitário Darcy Ribeiro, 90910‑900 Brasilia, Brazil D. Araujo Rio Tinto Exploration Pty. Limited, 1...deposits and kimberlites from the Juina district in Brazil (Wilding 1990; Harte 1992; Hutchinson 1997; Walter...168:1081 Australia (Tappert et al. 2009a, b) and Brazil, both from Machado river (Bulanova et al. 2008) |  | Zedgenizov, D. A., Ragozin, A. L., Kagi, H., Yurimoto, H., Shatsky, V. S. (2019) SiO2 Inclusions in Sublithospheric Diamonds. Geochemistry International, 57 (9) 964-972 doi:10.1134/s0016702919090131 | Journal (article/letter/editorial) | | (kimberlites and alluvial placers) in the Juina area, Brazil, because these diamonds typically host inclusions...sublithospheric diamonds from São Luís placers, Brazil. These data are then used in discussing the conditions...14–16 kbar, i.e., in the thermodynamic stability field of stishovite (Walter et al., 2011; Kaminsky, 2012;...SiO2 and other minerals from the Juina deposit, Brazil: (a) SL-2; (b) SL-16; (c) SL-28; (d) SL-31; (e)...diamonds with SiO2 inclusions from the Juina deposit, Brazil. lyzed them using Raman spectroscopy. The spectra |  | Shatsky, Vladislav S., Ragozin, Alexey L., Logvinova, Alla M., Wirth, Richard, Kalinina, Viktoria V., Sobolev, Nikolay V. (2020) Diamond-rich placer deposits from iron-saturated mantle beneath the northeastern margin of the Siberian Craton. Lithos, 364. 105514pp. doi:10.1016/j.lithos.2020.105514 | Journal (article/letter/editorial) | | 2003) (Fig. 1). However, the known Mesozoic kimberlite pipes in this region are low-grade or non-diamondiferous...range of 370–5000 cm−1 by 30 scans at a resolution of 4 cm−1. The spectra were recorded using an aperture...sample 14–4 are rounded crystals of variety I in Orlov's classification (Orlov, 1977). Diamond 14–4 shows...plates reveals that diamond 17-3 and intergrowth 14–4 have prominent octahedral zoning (Fig. 3). Diamond...diamond Hi-138 (from 10 to 540 ppm) (Table 1, Fig. 4). All the diamonds are characterised by a relatively |  | Navon, Oded, Stachel, Thomas, Stern, Richard A., Harris, Jeffrey W. (2018) Carbon and nitrogen systematics in nitrogen-rich, ultradeep diamonds from Sao Luiz, Brazil. Mineralogy and Petrology, 112. 301-310 doi:10.1007/s00710-018-0576-9 | Journal (article/letter/editorial) | | nitrogen-rich, ultradeep diamonds from Sao Luiz, Brazil Oded Navon 1 & Thomas Stachel 2 & Richard A....Nature 2018 Abstract Three diamonds from Sao Luiz, Brazil carrying nano- and micro-inclusions of molecular...nitrogen-rich, ultradeep diamonds from Sao Luiz, Brazil ON-SLZ-392 ON-SLZ-391 b e d a f c d 1 mm...entrance slit width of 110 μm, field aperture of 5 mm × 5 mm, a field aperture-to-sample magnification...magnification of 133×, an entrance slit width of 45 μm, field aperture of 3 mm × 3 mm, and energy slit width of |  | Wirth, R., Dobrzhinetskaya, L., Harte, B., Schreiber, A., Green, H.W. (2014) High-Fe (Mg, Fe)O inclusion in diamond apparently from the lowermost mantle. Earth and Planetary Science Letters, 404. 365-375 doi:10.1016/j.epsl.2014.08.010 | Journal (article/letter/editorial) | | surface through diapiric upwelling culminating in kimberlite eruption. © 2014 Elsevier B.V. All rights reserved...composition, but a small number from the Juina province, Brazil, show low Mg:Fe ratio (XFe up to 0.65) (Harte and...diamond was first observed from the Koffiefontein kimberlite, South Africa, and interpreted as of probable...inclusions have been extensively reported from Brazil (Harte and Hudson, 2013; Kaminsky, 2012; Kaminsky...mw inclusion from a large diamond from Sao Luis, Brazil (sample BZ66). Previous workers on this inclusion |  | | Journal (article/letter/editorial) | | cited 711 times since publication and mentioned in 4 papers in this issue—Christian Chopin concluded his...David Smith’s paper the same year, heralded a new field of research. I thought it would be interesting to...to be the one looking at these rocks with both a field and an experimental background. Serendipity or just...familiarized himself with experimental petrology and field mineralogy. He completed an Alpine thesis under...diamond-bearing rocks from the Alps. Nature Geoscience 4: 703-706 A UGUS T 2013 PERSPECTIVE THE FATE OF |  | Seitz, Hans-Michael, Brey, Gerhard P., Harris, Jeffrey W., Durali-Müller, Soodabeh, Ludwig, Thomas, Höfer, Heidi E. (2018) Ferropericlase inclusions in ultradeep diamonds from Sao Luiz (Brazil): high Li abundances and diverse Li-isotope and trace element compositions suggest an origin from a subduction mélange. Mineralogy and Petrology, 112. 291-300 doi:10.1007/s00710-018-0572-0 | Journal (article/letter/editorial) | | inclusions in ultradeep diamonds from Sao Luiz (Brazil): high Li abundances and diverse Li-isotope and...kimberlitic diamonds from Sao Luiz (Juina area in Brazil) is the enormous range in Mg# [100xMg/(Mg + Fe)]...alluvial diamonds from Sao Luiz (Juina area) in Brazil provided the first comprehensive evidence for an...can occur at any depth in the diamond stability field and are not restricted to the lower mantle. Brey...inclusions in ultradeep diamonds from Sao Luiz (Brazil): high Li abundances and diverse... closely through |  | Burnham, A.D., Thomson, A.R., Bulanova, G.P., Kohn, S.C., Smith, C.B., Walter, M.J. (2015) Stable isotope evidence for crustal recycling as recorded by superdeep diamonds. Earth and Planetary Science Letters, 432. 374-380 doi:10.1016/j.epsl.2015.10.023 | Journal (article/letter/editorial) | | the Juina-5 and Collier-4 kimberlites and the Machado River alluvial deposit in Brazil have carbon isotopic... and diamonds transported to the surface by kimberlite eruptions worldwide (Jacob, 2004), or it may...diamonds from South Africa (the Jagersfontein kimberlite). As with lithospheric eclogitic inclusions from...18 O for superdeep diamonds from Brazil (the Juina-5 and Collier-4 kimberlites; Bulanova et al., 2010;...fluorination at SUERC as δ 18 O = 21.0 ± 0.4h (1σ , n = 4). For garnet a set of 10 standards of known δ 18 O |  | | Journal (article/letter/editorial) | | high-pressure experiments There is no known TAPP stability field in mantle lithologies that have been investigated...come from diamonds found in the Juina region of Brazil (Harris et al., 1997; Harte et al., 1999; Hutchison...others in that it contains virtually no chromium, has 4 wt% TiO2, and 23 wt% FeO (Bulanova et al., 2010)...in composite inclusions contains on the order of 4–8 wt% TiO2 and 7–10 wt% FeO (total Fe) (Harte et al...complete overlap between the TAPP inclusions and the field of Mg-Pv compositions from experiments on basalt |  | Ragozin, Alexey, Zedgenizov, Dmitry, Shatsky, Vladislav, Kuper, Konstantin, Kagi, Hiroyuki (2019) Deformation Features of Super-Deep Diamonds. Minerals, 10 (1) 18 doi:10.3390/min10010018 | Journal (article/letter/editorial) | | Shatsky 1,2 , Konstantin Kuper 3 and Hiroyuki Kagi 4 1 2 3 4 * V.S. Sobolev Institute of Geology and Mineralogy...(sublithospheric) diamonds from Saõ-Luiz river placers (Brazil) and from alluvial placers of the northeastern...been formed at depths of 120–200 km at pressures of 4–6.5 GPa and temperatures of 950–1300 ◦ C [1–6]. However...[13–15], i.e., alluvial placers the Saõ-Luiz in Brazil [16,17] were reported in various worldwide localities...riverand in northeastern Siberian Platform [18,19]. Brazil [16,17] and northeastern Siberian Platform [18 |  | Shatskiy, A., Rashchenko, S. V., Ohtani, E., Litasov, K. D., Khlestov, M. V., Borzdov, Y. M., Kupriyanov, I. N., Sharygin, I. S., Palyanov, Y. N. (2015) The system Na2CO3-FeCO3 at 6 GPa and its relation to the system Na2CO3-FeCO3-MgCO3. American Mineralogist, 100 (1) 130-137 doi:10.2138/am-2015-4777 | Journal (article/letter/editorial) | | structure with cell parameters a = 4.9712(16), c = 16.569(4) Å, V = 354.61(22). The Na2CO3Na2Fe(CO3)2 eutectic...structure with cell parameters a = 4.9712(16), c = 16.569(4), V = 354.61(22) Å3 (Table 2). For comparison, the...cell are a = 10.217(17), b = 7.235(19), c = 5.265 (4) Å, V = 389.10(11) Å3. Discussion The Na2CO3-FeCO3...06 Mg0.07)CO3 at 6 GPa are illustrated in Figure 4. The system has one intermediate compound: Na2Fe(CO3)2...(Shatskiy et al. 2013a) and Na2CO3-FeCO3 systems (Fig. 4) have similar topology with intermediate Na2(Fe,Mg)(CO3)2 |
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