[meteorite-list] Green meteorites

From: Rosemary Hackney <ltcrose_at_meteoritecentral.com>
Date: Thu Apr 22 10:01:35 2004
Message-ID: <001701c21bcf$359172e0$ca76d6d1_at_default>

  Heisted from Thaigem.com
There is another called Moisantite which is similar tothe diamonds found in
Canyon Diablo.. and they are lab created.. Don't know if this is what you
are talking about or not. But I lost the notice from Thaigem at the moment.

Rosie
A stone with a weird name, Mawsitsit is a high-Chromium content cousin of
Jadeite. It is found in only one deposit on earth, in the village of the
same name in northern Burma (Myanmar) where Imperial Jadeite is mined. It is
famous for its vivid green tone with areas of black in the same specimen.

Mawsitsit was first identified by Swiss Gemologist, Eduard Gubelin in 1963.
The famous gemologist was traveling in Burma and noticed a bright green rock
with black inclusions being mined. It has taken over 30 years for this
beautiful material to become available to the world at large.



Mawsitsit is not considered Jade, but is similar in its toughness and the
uses made of it. It is composed of Chrome Jadeite, Ureyite, and Natrolite.
It receives its lovely green color from Chromium and its black swirls from
Ureyite. This combination creates specimens with flowing veins of green and
black. The dramatic contrast of bright green and black is unique in the gem
world.

The crystal structure of Mawsitsit is an aggregate very similar to Jade in
its fibrous texture. Mawsitsit ranks 6 to 8 on the Moh's Scale of Hardness
with a Specific Gravity of 2.50 to 3.10. It occurs in opaque to translucent
form and is waxy to vitreous in luster.

Mawsitsit is used for carvings and cut into cabochons for jewelry. Mawsitsit
is an attractive and very durable stone. It is suitable for everyday wear
jewelry. However, care should also be taken to avoid contact with chemicals
and heat and the use of ultrasonics.


----- Original Message -----
From: "Tracy Latimer" <tracyl_at_lib.state.hi.us>
To: <meteorite-list_at_meteoritecentral.com>
Sent: Monday, June 24, 2002 1:44 PM
Subject: [meteorite-list] Green meteorites


> I've recently started branching out from meteorites (to the alarm of my
> husband!) to semi-precious gemstones. I prefer the obscure ones, and
> thought I'd found a winner when I came across "mawsitsit", a
> chromium-rich relative of jade from Burma. The advertising copy on the
> website says that the mineral components of mawsitsit are found in some
> meteorites and also goes by the trade name of "Kosmochlor". Has anyone
> ever heard of this? I don't doubt that traces of the mineral might occur
> in meteorites, but not in useable quantities, i.e, make gems out of
> it. The only "green" meteorites I know of are Tatahouine and Bluff (b),
> and of course everyone's favorite, the "emerald" meteorite!
>
> Chemical composition of the stone is NaCrSi2O6 (Ureyite) and NaAlSi3O8
> (Albite) mixed together. The ureyite is what is supposed to be in
> meteorites, as a very dark green, almost black, mineral. Hmmm...
>
> Tracy Latimer
>
>
>
>
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Received on Mon 24 Jun 2002 06:33:46 PM PDT