"Jargoon" Quotes from Famous Books
 ... however with the silicate of zirconium that we have to deal at the moment. This is called zircon, ZrSiO{4}, or hyacinth when transparent or red, but when smoke-coloured, or colourless, it is the jargoon, or jarcon, and is found in silt and alluvial soils, limestone, gneiss, and various forms of schist, in India, Australia, the Urals, and certain parts of America. It is often combined with and found in juxtaposition to gold and certain varieties of precious stones. The lines of cleavage are parallel ...
— The Chemistry, Properties and Tests of Precious Stones • John Mastin |
