"Zircon" Quotes from Famous Books
 ... the rarer and more precious metals do not generally enter into the composition of precious stones—which fact may advisedly be repeated. It is, of course, to be expected that beryllium will be found in the emerald, since it is under the species beryl, and zirconium in zircon; but such instances are the exception, and we may well wonder at the actions of the infinite powers of nature, when we reflect that the rarest, costliest and most beautiful of all precious stones are the ...
— The Chemistry, Properties and Tests of Precious Stones • John Mastin
... its level, the metal could not be extracted with advantage. The position in which it occurs is similar to that in which tin ore presents itself in Saxony; and along with it, the natives, when searching for gems, discover garnets, corundum, white topazes, zircon, and tourmaline. ...
— Ceylon; an Account of the Island Physical, Historical, and • James Emerson Tennent
... frequently, in this formation, with the exception of chromic iron, occur not in the serpentine but in the veins therein contained; for instance, crystals of dolomite are found deeper in the rock as they occur in the denser soapstone, which becomes so at a more or less considerable depth, with spinel, zircon, etc., of the granular limestone. They occur generally in pockets within five feat from the surface, but they can hardly be called included minerals, as they are rather, as their mention suggests, pockets, and adjacent or in contact with the intruded ...
— Scientific American Supplement, No. 363, December 16, 1882 • Various
... on the scale within the instrument the refractive index, as it is called, of any precious stone that is not too highly refractive. (Its upper limit is 1.80. This would exclude very few stones of importance, i. e., zircon, diamond, sphene, and ...
— A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public • Frank Bertram Wade
... widespread blackouts in 2006 and 2007. The phosphate industry has struggled for two years to secure capital, and reduced output has directly impacted GDP. In 2007, Senegal signed agreements for major new mining concessions for iron, zircon, and gold with foreign companies. Firms from Dubai have agreed to manage and modernize Dakar's maritime port, and create a new special economic zone. Senegal still relies heavily upon outside donor assistance. Under the IMF's Highly Indebted Poor Countries (HIPC) debt relief program, ...
— The 2008 CIA World Factbook • United States. Central Intelligence Agency. |
