 | | Journal (article/letter/editorial) | | clusters in Guinea, two Jurassic-aged clusters in Sierra Leone, and in Liberia two clusters of unknown age...Banankoro cluster pipes in Guinea, the Koidu pipes in Sierra Leone and small pipes in the Weasua cluster...Jurassic kimberlites are considered to represent one province of kimberlites that track from older bodies in...to progressively younger kimberlites in Sierra Leone (Koidu, 146 Ma and Tongo, 140 Ma). The scarcity...Geochronology; Petrography; Mineral chemistry; Sierra Leone; Guinea; Liberia 1. Introduction The kimberlites |  | | Book | | 38% present w o r l d p r o d u c t i o n o f diamond. With c o n s i d e r a b l y United on so Santa...p o r t u n i t y t o v i s i t the f i r s t diamond-bearing ever d i s c o v e r e d . 1982, the...as lamproites In even Utah meeting States diamond-bearing area, and and the provide the localities...t i n g to be f e d " 1 Surrealism this of diamond A r e l a t i v e l y l a r g e amount o f the...F . R . Boyd 75 (4) The Koidu K i m b e r l i t e Complex, S i e r r a Leone: G e o l o g i c a l S e |
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