 | | Report (issue) | | Metallic. Z=2 X-ray Powder Pattern: Letseng diamond mine, Lesotho. 1.992 (100), 1.718 (55), 2.978 (53)...100.00 (2) 64.67 35.33 100.00 (1) Letseng diamond mine, Lesotho; average semiquantitative EDS analysis;...(containing less than ~5 ppm N) diamond from a kimberlite pipe. Association: Diamond, magnetite-magnesioferrite...hematite, graphite. Distribution: From the Letseng diamond mine, Lesotho. Name: Honors G. Robert Crowningshield...NiS polymorph found in a type IIa diamond from the Letseng mine, Lesotho. Amer. Mineral., 106(1), 301-308 |  | | Journal (article/letter/editorial) | | stones represent a third and hitherto unrecognised diamond paragenesis. Their isotopic signature is closely...fugacities between the WM and IW, would be in the diamond P-T-fO2 stability field. The low N concentrations...the largest gem diamond ever found, the 3106 Cullinan, recovered from the Premier Mine, South Africa (Williams...Letsengla-terai (Letseng) in Lesotho results in this locality having the worldās highest average diamond value ($2500/ct)...very kindly provided by Debbie Bowen of Letseng Diamond Mine, illustrates a selection of Type IIa stones |  | Galloway, M., Nowicki, T., van Coller, B., Mukodzani, B., Siemens, K., Hetman, C., Webb, K., Gurney, J. (2009) Constraining kimberlite geology through integration of geophysical, geological and geochemical methods: A case study of the Mothae kimberlite, northern Lesotho. Lithos, 112. 130-141 doi:10.1016/j.lithos.2009.06.026 | Journal (article/letter/editorial) | | case study of the Mothae kimberlite, northern Lesotho M. Galloway a,ā, T. Nowicki b, B. van Coller c...Cretaceous Mothae kimberlite is located in northern Lesotho on the southeast margin of the Kaapvaal craton...Historical work suggests that Mothae has a low average diamond grade of ~ 3 cpht and the economic viability therefore...diamonds as does that of the nearby Letseng Diamond Mine. Deļ¬ning such a diamond population requires a very large...volcaniclastic kimberlite each with a potentially different diamond content. The map of the near surface geology constructed |  | | Journal (article/letter/editorial) | | analyses identify and label known explosions within mine areas in the catalogue but, as new mines open or...outside the mine area. Explosions had already been identiļ¬ed and labelled in the Venetia mine, GaMapela...GaMapela mine and Letseng diamond mine before February 2017; however some explosions remained in the catalogue...probable explosions. Known explosions for the Letseng diamond mine have a time interval between 06:00 and 18:00...maximum magnitude for mine blasts. Known explosions for the Letseng diamond mine have an upper magnitude |  | | Journal (issue) | | HPHT-Grown Synthetic Diamonds Diamonds from the LetÅ”eng Mine Fall 2015 VOLUME 51, No. 3 EDITORIAL 221 Trapiche...Colorless HPHT-Grown Synthetic Gem Diamonds from New Diamond Technology, Russia Ulrika F.S. DāHaenens-Johansson...gemological analysis. pg. 270 280 LetÅ”engās Unique Diamond Proposition Russell Shor, Robert Weldon, A.J.A...Unusual graining structure in pink diamond ā¢ Yellow HPHT-treated rough diamond ā¢ Colorzoned emerald ā¢ Orange...synthetic diamonds ā¢ Polished freeform topaz imitating diamond rough pg. 325 323 2015 G&G Challenge Winners |  | | Journal (article/letter/editorial) | | in Lake TranebƤrssjƶn - A former uranium open pit mine SUSAN EBRAHIMI1, SAEED ALIREZAEI1 2 AND YUANMING...TranebƤrssjƶn, the former open-pit mine in the closed uranium mine at Ranstad, Sweden was chosen. The...An intended case study on xenoliths from the Letseng mine SEBASTIAN ERHARDT1 AND HOLGER SOMMER2 1 Freie...will be collected from the Letseng Diamond Mine in northern Lesotho. The mine comprises two economic interesting...megacrysts of olivine and garnet [3]. Samples from Letseng are therefore ideal for case studies on water-bearing |  | | Book (volume) | | Lda. Lin1icada (Spain) LOR Liberian dollar LSL Lesotho loci Ltd. Limited Ltda. Limitada (Brazil, Porn1gal)...shares of stock co buy its first coal mine, che underground Doriki mine in the Illinois Basin section of Kentucky...Coal in 1973. Martin County's Pontiki underground mine com1nenced operations in 1977. In chat san1e year...as an attorney for Falcon Coal Corporation and Diamond Shamrock Coal Corporation before joining MAPCO...early 1989, rhe Pontil<.i mine added reserves by purchasing a nearby inactive mine, and MAPCO Coal also acquired |
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