 | | Journal (article/letter/editorial) | | 1980 Megacrysts and Xenoliths in Kimberlite, Elliott County, Kentucky: A Mantle Sample from Beneath the...Tennessee, Knoxville, TN 37916, USA Abstract. Two kimberlite pipes in Elliott County con- tain rare ultramafic...Cr-spinel, magnetite, perovskite, pyrrhotite, calcite, and hydrous silicates. Rare clinopyroxene-ilmenite...result of an increase in fo ~. Introduction Kimberlite diatremes and dikes characteristically provide...Taylor: Megacrysts and Xenoliths in Kimberlite, Elliott Co., Kentucky (Boyd 1976) or the P - T systematics |  | | Journal (article/letter/editorial) | | Available online 1 June 2004 Abstract North American kimberlite magmatism spans a period of time in excess of...distinct kimberlite emplacement patterns are recognized. In general, the temporal pattern of kimberlite emplacement...subdivided into five domains: (1) a Mesoproterozoic kimberlite province in central Ontario, (2) an Eocambrian/Cambrian...that includes two Type-3 kimberlite provinces (i.e. multiple periods of kimberlite emplacement preserved...Wyoming cratons). For some provinces the origin of kimberlite magmatism can be linked to known mantle heat |  | Robles-Cruz, Sandra E., Watangua, Manuel, Isidoro, Leonardo, Melgarejo, Joan C., GalÃ, Salvador, Olimpio, Antonio (2009) Contrasting compositions and textures of ilmenite in the Catoca kimberlite, Angola, and implications in exploration for diamond. Lithos, 112. 966-975 doi:10.1016/j.lithos.2009.05.040 | Journal (article/letter/editorial) | | compositions and textures of ilmenite in the Catoca kimberlite, Angola, and implications in exploration for...Ilmenite Kimberlite Diamond Fluid Texture Composition a b s t r a c t The Catoca group-I kimberlite, the...exclude the presence of diamond crystals in a kimberlite. Compositional attributes must thus be considered...the production being obtained from the Catoca kimberlite, in Lunda Sul province, in northeastern Angola...Angola. Catoca, currently the unique active kimberlite mine in Angola, is located in the Lucapa structure |  | | Journal (article/letter/editorial) | | Kentucky Kentucky Mineral Mineral Locality Index Downloaded by [Dalhousie University] at 18:01 27 December...Figure 1. Twinned calcite, 8 cm, Caldwell Stone Company quarry, Danville, Boyle County. Terry Huizing specimen...Commonwealth is Black Mountain in the Appalachians (Harlan County) at 4,139 feet. The lowest point is the floor of...quarry near Grand Rivers (Livingston County) in western Kentucky, at 100 feet below sea level. There are...of small, nondiamondiferous kimberlite in Elliott County in eastern Kentucky and alnöite intrusions in |  | | Journal (article/letter/editorial) | | crystallization appears to be typical of carbonate-rich kimberlite magmas, and is texturally related to the two...pre-fluidization to post-fluidization stages of kimberlite emplacement (Haggerty, 1973; Mitchell & Clarke...residuum with progressive crystallization of kimberlite magma is typical and probably more common than...for estimating kimberlite compositions. Skinner & Clement (1979) proposed a kimberlite classification...(excluding olivine): phlogopite, carbonate (commonly calcite), serpentine, clinopyroxene (commonly diopside) |  | | Journal (article/letter/editorial) | | com/locate/epsl Timing of eastern North American kimberlite magmatism: continental extension of the Great...Twenty-nine new high precision U^Pb perovskite ages for kimberlite and other CO2 -rich ultrabasic rocks, primarily...Mesozoic kimberlite magmatism can be distinguished. These new data document four periods of kimberlite magmatism...NW^SE Triassic to Cretaceous age progression in kimberlite magmatism, which is consistent with the relative...during this interval. This age progression in kimberlite magmatism extends for more than 2000 km from |  | | Report (issue) | | xenoliths . 61 Jane E. Nielson and Jay S. Noller Kimberlite-transported nodules from Colorado- Wyoming; A...relationship . 91 James K. Meen Magma mixing and kimberlite genesis; Mineralogic, petrologic, and trace element...Breccia, southeast Kalimantan, Indonesia: Intrusive kimberlite breccia or sedimentary conglomerate? . S. C....A note on newly discovered kimberlites in Riley County, Kansas William L. Mansker, Bill D. Richards, and...petrography of the Twin Knobs ttl lamproite, Pike County, Arkansas . 205 Michael A. Waldman, Tom E. McCandless |  | | Journal (article/letter/editorial) | | The timing of kimberlite magmatism in North America: implications for global kimberlite genesis and diamond...compilation of more than 100 kimberlite age determinations, four broad kimberlite emplacement patterns can...Saskatchewan, central USA), and (4) a western mixed (Cambrian-Eocene) Type 3 kimberlite province (Alberta...Within the Type 3 Slave craton, at least four kimberlite age domains exist: I-a southwestern Siluro-Ordovician...mixed domain consisting of Jurassic and Permian kimberlite fields. New U – Pb perovskite results for the |  | | Journal (issue) | | barite mineralisation in the Magnesian Limestone o f County D u r h a m . J . G. Mitchell, P. N. Rands & P...243(4894), 1989, pp 1053-1056, 2 maps. Authigcnic calcite cementing a l l u v i u m containing Palaeolithic...amygdalcs i n the flood basalt contain microcline. calcite. epidote a r t chlorite. T h e R b / S r dating...One hydrothermal assemblage consists o f quartz. calcite. sulphides and minor silicates. These veins constitute...(including morphological drawings and SEM photographs). Calcite, aragonite and numerous zcolitcs feature strongly |
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