andradite

How To Use andradite In A Sentence

• The third major find in recent years is green andradite, some of which may be considered demantoid.
• A number of obsolete and superfluous names have been assigned to Franklin andradite, among them are the polyadelphite of Thomson, melanite of Seybert and Seymour, and also colophonite, topazolite, and titanmelanite, all of obscure origin locally.
• This topazolite thumbnail is from one of the few good locales for this variety of andradite - San Benito County, California.
• The name topazolite is considered obsolete by many, with yellow andradite or yellow demantoid being preferred names for the stones described.
• The yellow kind of andradite known as topazolite would be an excellent gem-stone if only it were found large and transparent enough.
• These are all silicates, the almandite garnets being silicates of iron and aluminum; the pyrope garnets are silicates of magnesium and aluminum; the hessonite garnets, silicates of calcium and aluminum, and the andradite garnets, silicates of calcium and iron. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
• Iron was remobilized and limned specular hematite, along with epidote, actinolite/tremolite, and andradite.
• Most non-Russian stones are so yellow (the result of coloring by iron as opposed to chromium) that they should perhaps be called topazolite, a greenish-yellow andradite.
• The skarns also contain hornblende, calcite, pyroxene, tremolite, pyrrhotite, molybdenite, galena, chalcopyrite, arsenopyrite, garnet (probably andradite or grossular), and pyrite.
• These are all silicates, the almandite garnets being silicates of iron and aluminum; the pyrope garnets are silicates of magnesium and aluminum; the hessonite garnets, silicates of calcium and aluminum, and the andradite garnets, silicates of calcium and iron. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public