Monday, March 10, 2014

Ruby, Sapphire, Kyanite, Sillimanite and Iolite at Palmer Canyon Wyoming

After I discovered iolite at Palmer Canyon, I made more discoveries as well as a half-dozen ruby deposits and a couple of kyanite gemstone deposits. I was amazed by how many gemstones, diamond, and gold deposits that had been overlooked in Wyoming: I can guarantee using the exploration models I developed for these deposits, I would have found dozens (if not hundreds) more gem and gold deposits. But it was time to move on and I took early retirement.

But there are still some more gemstone deposits to find that I didn't get time to search for. As you think about rubies and sapphires - keep two rock types in mind while prospecting in Montana, Wyoming Colorado, and California - vermiculite and serpentinite!  These are very good host rocks for these gemstones. To find out more about these, I summarized the characteristics of ruby, sapphire and their host rocks in a couple of recent books.
Kyanite-ruby-vermiculite schist, Palmer Canyon, west of Wheatland, Wyoming.
A more than 18,000-carat iolite boulder of ioite. The iolite is partially altered to limonite and the boulder includes
milky quartz. Palmer Canyon, Wyoming.

Specimens of vermiculite schist filled with purple-red ruby, Palmer Canyon.
Iolite in schist, Palmer Canyon, Wyoming
Excellent iolite (more than a thousand carats) from an undisclosed Wyoming locality

Kyanite schist, West Cooney Hills, Wyoming
Beautiful iolite rough in gneiss from undisclosed locality, Wyoming

Ruby in vermiculite schist from Palmer Canyon