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Kyanite

Posted by David Von Bargen  
avatar Re: Kyanite
September 06, 2010 05:48PM
us    
Hi Guys,
The specimen in question was in an old wooden box with about 30 others, all were very gemmy crystals and written on the box in pencil was Thomas mine, this is how I came to think this piece was from Thomas, I'll delete the location, I'm sure that Keith is spot on :)


Thanks!!

KOR
Everett
Re: Kyanite
September 06, 2010 06:21PM
Rock,

This deposit (Borisovskie Sopki) was found at the end of 19th century. Now it is developed only by mineral collectors and consists of several open pits. The largest crystals from this deposit were 20 cm long. I saw crystals with dimensions of about 15 x 3 x 1 cm. Kyanite crystals have inclusions of quartz, mica, rutile, and tourmaline. Gem material is rare.

Igor
Re: Kyanite
September 06, 2010 07:16PM
us    
Rock,

Thanks. I'll think about it. I am in the midst of moving my household from one end of the state to another, so I can't promise anything soon.

Keith
Re: Kyanite
September 06, 2010 07:19PM
us    
Perhaps some of the other specimens in the box were from the Thomas mine. Attach a few pictures to a reply and we can all have a look.
Re: Kyanite
September 07, 2010 12:06AM
Hi David:

I will be able to correct most of the Brazilian kyanite localities; I am in Tucson now, finishing to sort minerals that I will be bringining to Denver, so I cannot make the corrections now; on the next few days, as soon as I can, I will send you my comments.

Luiz
avatar Re: Kyanite
September 07, 2010 04:21AM
us    
Keith,
All the specimens look just like the one I posted, sericite/feldspar mix, there are a lot of loose crystals, none that I can recall off the top of my head that were termed.


Thanks!!!!
E
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