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Journal Article
Published: 01 June 1998
Mineralogical Magazine (1998) 62 (3): 313–323.
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Relative depths of origin of diverse mantle-derived undersaturated meliliti...
Published: 01 December 2005
F ig . 4. Relative depths of origin of diverse mantle-derived undersaturated melilitite and nephelinite magmas in a plume-related extensional tectonic setting. Kimberlites and orangeites, which occur only in stable cratonic regions, are not considered to result from plume-related magmas. K
Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2018
DOI: 10.5382/SP.20.09
EISBN: 9781629496399
... pipe rocks show seemingly contradictory affinities with kimberlites, orangeites, and lamproites. Atri is best described as a transitional kimberlite-orangeite-lamproite rock, very similar to the nearby Majhgawan pipe, and both pipes may be considered the type examples of majhgawanite as defined by Rao...
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Journal Article
Published: 01 August 2000
Mineralogical Magazine (2000) 64 (4): 625–639.
...). This is relevant to the origin and evolution of ultrapotassic (K/Na ≫2) and associated rocks generally, notably the occurrences from Ugandan kamafugites, Western Australian lamproites and South African orangeites. The selected ULUD samples yielded 87 Sr/ 86 Sr and 143 Nd/ 144 Nd ranging from 0.7100 to 0.7112...
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Book Chapter

Author(s)
B.A. Kjarsgaard
Series: DNAG, Geology of North America
Published: 01 January 1995
DOI: 10.1130/DNAG-GNA-P1.559
EISBN: 9780813754680
...Abstract Abstract Diamonds are lithologically widely distributed, and are found in unconsolidated and consolidated sediments (placers and paleoplacers), various igneous rock types of deep-seated origin (kimberlite, orangeite, lamproite, alnoite, aillikite, picritic monchiquite, alkali basalt...
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100Mn/Fe vs. 100Ni/Mg for the primitive olivine-Ia relative to olivine from...
Published: 01 July 2021
Figure 9. 100Mn/Fe vs. 100Ni/Mg for the primitive olivine-Ia relative to olivine from aillikites ( Veter et al. 2017 ; Nosova et al. 2018 ) and orangeites ( Howarth 2018 ). The compositional fields for “dry” pyroxenite and peridotite are from Sobolev et al. (2007) . Geochemical compositions
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Cr 2 O 3  versus Mg# plot showing the three compositional trends: H (blue s...
Published: 01 June 2004
Figure 3. Cr 2 O 3 versus Mg# plot showing the three compositional trends: H (blue symbols), M (black symbols) and L (green symbols). The red symbols are orangeite megacrysts.
Journal Article
Journal: Elements
Published: 01 December 2019
Elements (2019) 15 (6): 387–392.
...: jdwood@unimelb.edu.au E-mail: phil.janney@uct.ac.za Copyright © 2019 by the Mineralogical Society of America 2019 Mineralogical Society of America hypabyssal kimberlite lamprophyre orangeite crustal contamination lithospheric mantle A first look at a kimberlite (see F ig . 1...
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Al 2 O 3  vs . FeO T  compositional variation of phlogopite in Vattikod lam...
Published: 01 February 2018
Fig. 8. Al 2 O 3 vs . FeO T compositional variation of phlogopite in Vattikod lamproites. Also shown is the field for phlogopites from other Ramadugu lamproites. Compositional fields and trends for kimberlites, lamproite, orangeite and minette micas from Mitchell ( 1995 ).
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Al 2 O 3  vs . TiO 2  (wt.%) compositional variation of phlogopite in Vatti...
Published: 01 February 2018
Fig. 9. Al 2 O 3 vs . TiO 2 (wt.%) compositional variation of phlogopite in Vattikod lamproites. Also shown is the field for phlogopites from other Ramadugu lamproites. Compositional fields and trends for kimberlites, lamproite, orangeite and minette micas from Mitchell ( 1995 ).
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Map of southern Africa showing major tectonic subdivisions (after  De Wit  ...
Published: 01 June 2004
Figure 1. Map of southern Africa showing major tectonic subdivisions (after De Wit et al., 1992 ; Hartnady et al., 1985 ) and location of kimberlites and orangeites. Numbers of kimberlite clusters correspond to those in Table 1 .
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Al 2 O 3  vs . FeO T  compositional variation of phlogopite in Raniganj GL-...
Published: 01 June 2009
F ig . 4. Al 2 O 3 vs . FeO T compositional variation of phlogopite in Raniganj GL-4 and GL-6 lamproites. Compositional fields and trends for kimberlite, lamproite, orangeite and minette micas from Mitchell ( 1995 ).
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Al 2 O 3  vs . TiO 2  compositional variation of phlogopite in Raniganj GL-...
Published: 01 June 2009
F ig . 5. Al 2 O 3 vs . TiO 2 compositional variation of phlogopite in Raniganj GL-4 and GL-6 lamproites. Compositional fields and trends for kimberlite, lamproite, orangeite and minette micas from Mitchell ( 1995 ).
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Variation diagrams for phlogopite. ( a ) TiO 2  versus Al 2 O 3.  ( b ) FeO...
Published: 18 July 2000
Fig. 3. Variation diagrams for phlogopite. ( a ) TiO 2 versus Al 2 O 3. ( b ) FeO T versus Al 2 O 3 . Compositional fields of kimberlite groundmass mica and orangeite primitive mica minerals are from Mitchell ( 1995 ).
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( a ) Al 2 O 3  vs. TiO 2  (wt.%) compositional variation of phlogopite in ...
Published: 01 December 2013
F ig . 7. ( a ) Al 2 O 3 vs. TiO 2 (wt.%) compositional variation of phlogopite in P2-West. ( b ) Al 2 O 3 vs. FeO T compositional variation of phlogopite in P2-West. Compositional fields and trends for kimberlites, lamproite, orangeite and minette micas from Mitchell ( 1995 ).
Journal Article
Published: 01 November 2014
American Mineralogist (2014) 99 (11-12): 2292–2302.
... compositions of samples corresponded to the average group II kimberlite (orangeite), with water contents varying from 5 to 9 wt% H 2 O and the CO 2 /(CO 2 +H 2 O) molar ratio from 0.37 to 0.24. The charges were placed inside graphite liners sealed in Pt capsules to avoid Fe loss. Oxygen fugacity ( f O 2...
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Journal Article
Published: 01 June 2009
Mineralogical Magazine (2009) 73 (3): 457–477.
...F ig . 4. Al 2 O 3 vs . FeO T compositional variation of phlogopite in Raniganj GL-4 and GL-6 lamproites. Compositional fields and trends for kimberlite, lamproite, orangeite and minette micas from Mitchell ( 1995 ). ...
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Journal Article
Published: 01 March 2007
Russ. Geol. Geophys. (2007) 48 (3): 272–290.
... area), which is characterized by the Sr and Nd isotopic composition corresponding to Type 2 micaceous kimberlites (orangeites). The most important feature of distribution of isotopic and trace-element compositions (incompatible elements) is their independence of the chemical rock composition...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 59–80.
...Figure 3. Cr 2 O 3 versus Mg# plot showing the three compositional trends: H (blue symbols), M (black symbols) and L (green symbols). The red symbols are orangeite megacrysts. ...
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A. Cr 2 O 3  versus Mg# plot for garnet megacrysts of the southern Kalahari...
Published: 01 June 2004
Figure 6. A. Cr 2 O 3 versus Mg# plot for garnet megacrysts of the southern Kalahari Craton comparing group I kimberlite megacrysts (black symbols) and orangeite megacrysts (red symbols), in relation to high-temperature peridotites from Premier ( Bell and Rossman, 1992 ) and Kimberley garnet