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(of a rock formation, region, etc.) producing or yielding diamonds.
- ‘Last December, two diamantiferous kimberlites were discovered in the Otish Mountain region.’
- ‘Numerous geological series of auriferous and diamantiferous areas would also be worth studying in detail.’
- ‘Finally, important discoveries of diamantiferous deposits are pursued in this moment in the region of Upper Kasai.’
- ‘Salomon, a fisherman, has to work in the diamantiferous mines.’
- ‘In the first case diamonds are extracted from the diamantiferous chimneys of the ancient volcanoes, made up of kimberlite, or blue rock.’
- ‘The diamantiferous sandstone of India is of very wide distribution.’
- ‘The marine prospection is made by boats equipped with pumps in order to sample the diamantiferous gravel.’
- ‘Several techniques are used to process the diamantiferous ore.’
- ‘Even if the kimberlitic and lamproitic rocks belong to intrusive phases of different ages, they can still crop out in the same geological sectors; therefore some diamantiferous diatremes may contain diamonds of different ages.’
Late 19th century: from French diamantifère, from diamant ‘diamond’ + -fère ‘producing’.
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