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cascaillou
Joined: 27 Nov 2011
Posts: 250
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Posted: Nov 29, 2011 19:05 Post subject: Re: Jade |
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It's ok for me. But I insist: a tiny 4mm sized piece is enough (not bigger!). Need it cut and very well polished, with flat and smooth surface.
You could send the envelope directly to my address in Paris.
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Tracy
Joined: 15 Sep 2006
Posts: 551
Location: Toronto
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Posted: Nov 30, 2011 08:45 Post subject: Re: Jade |
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Perhaps this conversation could continue by private message? Still too early for cascaillou, but mihailovici79 can send a pm to set up a less public exchange.
- Tracy
_________________ "Wisdom begins in wonder" - Socrates |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4900
Location: Barcelona
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Posted: Nov 30, 2011 08:49 Post subject: Re: Jade |
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Tracy wrote: |
...Still too early for cascaillou, but mihailovici79 can send a pm to set up a less public exchange.
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Yes, too early for Cascaillou to send PM, but instead he can receive and answer PM so if mihailovici79 send it to him, it will work.
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mihailovici79
Joined: 07 Sep 2011
Posts: 111
Location: Timisoara
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Posted: Nov 30, 2011 13:10 Post subject: Re: Jade |
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ok sorry about this
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mihailovici79
Joined: 07 Sep 2011
Posts: 111
Location: Timisoara
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Posted: Dec 01, 2011 07:03 Post subject: Re: Jade |
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Jade the other nuance of color. Jade Romania ft Amethyst Brasil
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cascaillou
Joined: 27 Nov 2011
Posts: 250
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Posted: Dec 01, 2011 18:03 Post subject: Re: Jade |
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I received your private message with your email address, I'll keep in touch.
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cascaillou
Joined: 27 Nov 2011
Posts: 250
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Posted: Feb 07, 2012 14:34 Post subject: Re: Jade |
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As we had agreed, Mihail gave me two mineral samples, which I analysed today.
Here's the first mineral:
https://imageshack.us/photo/my-images/69/dsc00104mz.jpg/
https://img69.imageshack.us/img69/7788/dsc00104mz.jpg
And here's the second mineral:
https://imageshack.us/photo/my-images/820/sdsc00102.jpg/
https://img820.imageshack.us/img820/195/sdsc00102.jpg
(links normalized by FMF)
Fisrt mineral:
definately looks like a garnet with pinkish color, the crystal is roughly isometric.
Hardness is 6 or 6.5
Polariscope gives it as isotropic.
Specific gravity is about 4.06
Spectrum confirmed that it is indeed a garnet.
Second mineral:
Weighs 29.58g
It is green and transluscent, with greasy luster. Some white veins are present.
The white veins instantly react to concentrated hydrochloric acid with effervescence (I guess these are calcite), however the green material remains unattacked after 24hours of soaking in HCl.
In transmitted light one can see that the inner world of the stone is cloudy, with cloudy structures sometimes arranged as bands (thus imparting somewhat of a banded appearance to the stone). Under stronger magnification, tiny inclusions of shiny black platelets can be seen in the mix.
Fracture is slightly splintery.
Hardness is 5 or 5.5
Streak is white.
Specific gravity is 2.56
Polariscope gives it as a microcrystalline aggregate.
Refactive index is about 1.558
From the above data, it should be serpentine (note that I didn't search for treatments).
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mihailovici79
Joined: 07 Sep 2011
Posts: 111
Location: Timisoara
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Posted: Feb 07, 2012 15:38 Post subject: Re: Jade |
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Thank you for your analysis. I have a question:why is so hard this serpentine? I know that the serpentine has 2.5 - 4 Mohs hardness.
Best regards.
Mihail
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cascaillou
Joined: 27 Nov 2011
Posts: 250
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Posted: Feb 07, 2012 15:50 Post subject: Re: Jade |
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well serpentine are actually a group of several closely related minerals. Most have a hardness from 2.5 to 4 but some (such as the bowenite variety) are 4 to 5.5
I guess it is best to have the harder kind as it will better handle wear.
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mihailovici79
Joined: 07 Sep 2011
Posts: 111
Location: Timisoara
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Posted: Feb 07, 2012 15:52 Post subject: Re: Jade |
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:) Yeah you`re right
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Chris Foltz
Joined: 28 Oct 2012
Posts: 92
Location: Maryland
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Posted: Nov 10, 2012 21:26 Post subject: Re: Jade |
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Has a greasy look to it like serpentine ... doesn't look like jade from the pic...very translucent ...nice!
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tomfan
Joined: 15 Jul 2012
Posts: 3
Location: xiamen
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Posted: Nov 11, 2012 03:06 Post subject: Re: Jade |
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the green ones we are sure that is serpentine, Not jade not nephrite, It is typical serpentine style. You are easy to see the white clouds inside.
_________________ jade,soapstone,nehprite,chlorite,pyrophyllite,agate, chalcedony, any stone rough good enough for carving. |
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Chris Foltz
Joined: 28 Oct 2012
Posts: 92
Location: Maryland
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Posted: Nov 11, 2012 07:24 Post subject: Re: Jade |
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I'm with you on that,love any gel to carve.All we have around here worth carving/cutting is antigorite from the serpentine barrens...That's what your stones remind me of, antigorite .It's called serpentine/jade around here by the lapidaries,it's harder than serpentine. Do you find your stone in conjunction with chromium deposits?
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Antigorite State Line Chrome Pits... 2" x 3"x1/2" |
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Antigorite State Line Chrome Pits... 2x3x2cm |
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Antigorite State Line Area of Md/Pa 2" x 3"x1/2"
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mihailovici79
Joined: 07 Sep 2011
Posts: 111
Location: Timisoara
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Posted: Nov 11, 2012 08:19 Post subject: Re: Jade |
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tomfan wrote: | the green ones we are sure that is serpentine, Not jade not nephrite, It is typical serpentine style. You are easy to see the white clouds inside. |
I think u re right, just hardness of this mineral is between 5-5.5. It`s maybe bowenite or something, IDK yet.
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Chris Foltz
Joined: 28 Oct 2012
Posts: 92
Location: Maryland
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Posted: Nov 11, 2012 13:33 Post subject: Re: Jade |
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Ask John White what he thinks. I'm betting you have antigorite...first picture you posted of it in front of the ruler looked very translucent,almost transparent...Think you get to name it if you are the one who found it first... What comes from around here is called Williamsite...Again ask John White about this...I'm just a lapidary with mineral interest... :)
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cascaillou
Joined: 27 Nov 2011
Posts: 250
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Posted: Jan 03, 2013 15:58 Post subject: Re: Jade |
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the one and only dark green serpentine sample from Mihail I had analysed was a hard variety (hardness 5 or 5.5) but it was not a chromian variety: there was no chelsea filter reaction, and there were no absorption lines in the red to be seen through a handheld diffraction grating spectroscope.
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