kimberlite pipe
41Finsch diamond mine — The Finsch Mine is an underground diamond mine, located near Lime Acres, 160km northwest of Kimberley, is one of seven operations managed by De Beers Consolidated Mines (DBCM), formed in July 2004. The Finsch mine is a traditional diamondiferous… …
42Dallas Stewart — Occupation Trainer Born September 15, 1959 McComb, Mississippi, United States Career wins 509 as of January 9, 2007 Major racing wins, honours and awards …
43DIAMANT — Connu en Inde dès la fin du IIe millénaire avant J. C., le diamant est le plus dur des matériaux connus. Cette dureté exceptionnelle en fait l’un des minéraux les plus recherchés et les plus prestigieux. Deux types d’utilisation permettent de… …
44Mountain Lake cluster — The Mountain Lake cluster is a group of two diatremes in Northern Alberta, Canada. It formed during a period of kimberlite volcanism about 77 million years ago.[1] Other nearby kimberlite clusters include the Birch Mountains kimberlite field and… …
45Mir mine — The Mir mine in Yakutia Location …
46Crater of Diamonds State Park — IUCN Category III (Natural Monument) …
47Lamproite — Lamproites are ultrapotassic mantle derived volcanic rocks. They have low CaO, Al2O3, Na2O, high K2O/Al2O3, a relatively high MgO content and extreme enrichment in incompatible elements.Lamproites are geographically widespread yet are… …
48Carbon — (), but as most compounds with multiple single bonded oxygens on a single carbon it is unstable.] Cyanide (CN–), has a similar structure, but behaves much like a halide ion (pseudohalogen). For example it can form the nitride cyanogen molecule… …
49Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …
50Pyrope — A gem quality, emerald cut pyrope. General Category Nesosilicate Chemical formula …
