Lazulite with gemmy Siderite (ex Kay Robertson Collection)

Item Description

Lazulite is a rare magnesium aluminum phosphate, and some of the finest, highly sought after, and best known specimens of this material come from this locality. The area around Rapid Creek is only accessible for a few months in the summer for collecting (it's under snow and ice the rest of the year), and is some of the most treacherous terrain in the world for collecting specimens. This specimen is a lovely display piece featuring excellent quality, sharp, lustrous, very well formed, monoclinic, deep inky blue color crystals of Lazulite measuring up to 5 mm associated with gemmy golden rhombic Siderite. A good quality specimen of this classic material. Ex Kay Robertson Collection (#10230). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017).