Diamond from the Los Coquitos area, Bolivar State, Venezuela

Canadian Mineralogist

Volumn 44, Issue 2, 2006, Pages 323-340

  Kaminsky, Felix V ^a   Zakharchenko, Olga D ^a   Khachatryan, Galina K ^a   Griffin, William L ^b,c   Channer, Dominic M Der ^d  

^a KM Diamond Exploration Ltd   (Canada)

^b MACQUARIE UNIVERSITY   (Australia)

^c CSIRO   (Australia)

^d Guaniamo Mining Company   (Venezuela)

Author keywords

Carbon isotopes; Diamond; Guaniamo; Infrared spectra; Los Coquitos; Venezuela

Indexed keywords

CARBON ISOTOPES; DIAMOND CRYSTALS; INFRARED SPECTRA;

AGGLOMERATION; CARBON; CRYSTALS; MORPHOLOGY; NITROGEN; OLIVINE;

DIAMONDS;

CARBON ISOTOPE; CHEMICAL COMPOSITION; DIAMOND; INFRARED SPECTROSCOPY;

BOLIVAR [VENEZUELA]; GUANIAMO; SOUTH AMERICA; VENEZUELA;

EID: 33746655297     PISSN: 00084476     EISSN: None     Source Type: Journal    
DOI: 10.2113/gscanmin.44.2.323     Document Type: Article

References (37)

1. Badro, J., Fiquet, G., Guyot, F., Rueff, J.-P., Struzhkin, V.V., Vankó, G. & Monaco, G. (2003): Iron partitioning in Earth's mantle: toward a deep lower mantle discontinuity. Science 300, 789-791.
2. Bartoshinsky, Z.V. (1962): Crystallography of Yakutian Diamond Crystals. Ph.D. thesis, L'vov University, L'vov, Russia (in Russ.).
3. Boyd, S.R., Kiflawi, I. & Woods, G.S. (1994): The relationship between infrared absorption and the A defect concentration in diamond. Phil. Mag. B69, 1149-1153.
4. Boyd, S.R., Kiflawi, I. & Woods, G.S. (1995): Infrared absorption by the B nitrogen aggregate in diamond. Phil. Mag. B72, 351-361.
5. Channer, D.M.Der., Egorov, A. & Kaminsky, F. (2001): Geology and structure of the Guaniamo diamondiferous kimberlite sheets, south-west Venezuela. Revista Brasileira de Geociências 31, 615-630.
6. Davies, R.M., Griffin, W.L., O'Reilly, S.Y. & Andrew, A.S. (2003): Unusual mineral inclusions and carbon isotopes of alluvial diamond crystals from Bingara, eastern Australia. Lithos 69, 51-66.
7. Davies, R.M., Griffin, W.L., O'Reilly, S.Y & Doyle, B.J. (2004): Mineral inclusions and geochemical characteristics of microdiamonds from the DO27, A154, A21, A418, DO18, DD17 and Ranch Lake kimberlites at Lac de Gras, Slave Craton, Canada. Lithos 77, 39-55.
8. Davies, R.M., O'Reilly, S.Y & Griffin, W.L. (2002): Multiple origins of alluvial diamonds from New South Wales, Australia. Econ. Geol. 97, 109-123.
9. Ellis, D.J. & Green, D.H. (1979): An experimental study of the effect of Ca upon garnet-clinopyroxene Fe-Mg exchange equilibria. Contrib. Mineral. Petrol. 71, 13-22.
10. Galimov, E.M., Kaminskiy, F.V. & Ivanovskaya, I.N. (1978): Carbon isotope composition of diamonds from the Urals, Timan, Sayan, the Ukraine, and elsewhere. Geochem. Int. 15(2), 11-18.
11. Gurney, J.J. & Harris, R.R.S. (1982): Silicate and oxide inclusions in diamond crystals from Orapa mine, Botswana. Terra Cognita 2(3), 102 (abstr.).
12. Gurney, J.J., Harris, J.W., Rickard, R.S. & Moore, R.O. (1985): Inclusions in Premier mine diamond crystals. Trans. Geol. Soc. S. Afr. 88, 301-310.
13. Harte, B. & Harris, J.W. (1994): Lower mantle mineral association preserved in diamond crystals. Mineral. Mag. 58A, 384-385.
14. Harte, B., Harris, JW., Hutchison, M.T., Watt, G.R. & Wilding, M.C. (1999): Lower mantle mineral associations in diamond crystals from Sao Luiz, Brazil. In Mantle Petrology: Field Observations and High Pressure Experimentation: a Tribute to Francis R. (Joe) Boyd (Yingwei Fei, C.M. Bertka & B.O. Mysen, eds.). Geochem. Soc., Spec. Publ. 6, 125-153.
15. Kaminsky, F.V. & Khachatryan, G.K. (2001): Characteristics of nitrogen and other impurity in diamond, as revealed by infrared absorption data. Can. Mineral. 39, 1735-1745.
16. Kaminsky, F.V. & Khachatryan, G.K. (2004): The relationship between the distribution of nitrogen impurity centres in diamond crystals and their internal structure and mechanism of growth. Lithos 77, 255-271.
17. Kaminsky, F.V., Sablukov, S.M., Sablukova, L.I. & Channer, D.M.DeR. (2004): Neoproterozoic "anomalous" kimberlites of Guaniamo, Venezuela: mica kimberlites of "isotopic transitional" type. Lithos 76, 565-590.
18. Kaminsky, F.V., Zakharchenko, O.D., Davies, R., Griffin, W, Khachatryan-Blinova, G. & Shiryaev, A.A. (2001a): Superdeep diamond crystals from the Juina area, Mato Grosso State, Brazil. Contrib. Mineral. Petrol. 140, 734-753.
19. Kaminsky, F.V., Zakharchenko, O.D., Griffin, W.L., Channer, D.M.DeR. & Khachatryan-Blinova, G.K. (2000): Diamond from the Guaniamo area, Venezuela. Can. Mineral. 38, 1347-1370.
20. Kaminsky, F.V., Zakharchenko, O.D., Khachatryan, G.K. & Shiryaev, A.A. (2001b): Diamonds from the Coromandel area, Minas Gerais, Brazil. Revista Brasileira de Geociências 31, 583-596.
21. Khachatryan, G.K. & Kaminsky, F.V. (2003): "Equilibrium" and "non-equilibrium" diamond crystals from deposits in the East European Platform, as revealed by infrared absorption data. Can. Mineral. 41, 171-184.
22. Kukharenko, A.A. (1955): Diamond Crystals of the Urals. Geoltekhizdat Publishing House, Moscow, Russia (in Russ.).
23. Mendelssohn, M.J. & Milledge, H.J. (1995): Geologically significant information from routine analysis of the mid-infrared spectra of diamond crystals. Int. Geol. Rev. 37, 95-110.
24. Meyer, H.O.A. (1982): Mineral inclusions in natural diamond. In Proc. Int. Gemological Symp. (Santa Monica), 445-465.
25. Orlov, Yu.L. (1984): Mineralogy of Diamond Crystals. Nauka Publishing House, Moscow, Russia (in Russ.). English translation published in 1987 by John Wiley and Sons, New York, N.Y.
26. Otter, M.L., Gurney, J.J. & McCandless, T.E. (1989): The carbon isotope composition of Sloan diamond crystals. In Workshop on Diamond Crystals. 28th Int. Geol. Congress, Extended Abstr., 76-79.
27. Reid, A.R. (1972): Stratigraphy of the type area of the Roraima Group, Venezuela. In Memoria de la IX Conferenca Inter-Guayanas. Boletin de Geologia, Publ. Esp. 6.
28. Robinson, D.R., Scott, J.A., Van Niekerk, A. & Anderson, V.J. (1989): The sequence of events reflected in the diamond crystals of some Southern African kimberlites. In Kimberlites and Related Rocks. 2. Their Mantle/Crust Setting (J. Ross et al., eds.). Geol. Soc. Aust., Spec. Publ. 14, 990-1000.
29. Schulze, D.J., Harte, B., Valley, J.W, Brenan, J.M. & Channer, D.M.DeR. (2003a): Extreme crustal oxygen isotope signatures preserved in coesite in diamond. Nature 423, 68-70.
30. Schulze, D.J., Valley, J.W., Spicuzza, M.J & Channer, D.M.DeR. (2003b): Oxygen isotope composition of eclogitic and peridotitic garnet xenocrysts from the La Ceniza kimberlite, Guaniamo, Venezuela. Int. Geol. Rev. 45, 968-975.
31. Simakov, S.K. (2003): Physico-Chemical Aspects of Diamond-Bearing Eclogites Formation in the Upper Mantle and Earth Crust Rocks. Far East Branch, Russian Academy of Sciences, Magadan, Russia.
32. Sobolev, N.V., Galimov, E.M., Ivanoskaya, I.N. & Yefimova, E.S. (1979): Isotopic composition of carbon of diamonds containing crystalline inclusions. Dokl. Akad. Nauk SSSR 249(5), 1217-1220 (in Russ.).
33. Sobolev, N.V., Galimov, E.M., Smith, C.B., Yefimova, E.S., Maltsev, K.A., Hall, E.E. & Usova, L.V. (1989): Morphology, inclusions and carbon isotopic composition of diamond crystals from the King George alluvial deposit and the Argyle lamproitic pipe, Western Australia. Geologiya i Geofizika, No. 12, 3-18.
34. Sobolev, N.V., Yefimova, E.S., Channer, D.M.DeR., Anderson, P.F.N. & Barron, K.M. (1998): Unusual upper mantle beneath Guaniamo, Guyana shield, Venezuela: evidence from diamond inclusions. Geology 26, 971-974.
35. Taylor, W.R. & Milledge, H.J. (1995): Nitrogen aggregation character, thermal history and stable isotope composition of some xenolith-derived diamond crystals from Roberts Victor and Finch. In Sixth Int. Kimberlite Conf., Extended Abstr. (Novosibirsk), 620-622.
36. Tolansky, S. (1955): The Microstructures of Diamond Surfaces. N.A.G. Press, London, U.K.
37. Zakharchenko, O.D., Kharkiv, A.D., Botova, M.M., Makhin, A.I. & Pavlenko, T.A. (1991): Inclusions of deep seated minerals in diamond crystals from kimberlite rocks of the north of the East European Platform. Mineral. Zh. 13(1), 42-52 (in Russ.).