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26 Mar-00:53:41 Re: collection of volkmar stingl (Volkmar Stingl)
25 Mar-13:32:10 Re: collection of michael shaw (Michael Shaw)
25 Mar-00:25:58 The mizunaka collection - quartz (Am Mizunaka)
23 Mar-13:35:22 Re: collection of firmo espinar (Firmo Espinar)
22 Mar-08:32:28 Re: collection of michael shaw (Michael Shaw)
22 Mar-04:20:41 Re: the mim museum in beirut, lebanon (Mim Museum)
21 Mar-22:49:19 Re: green seam. Looks like it in a state of decay. (Ning)
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Jade
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cascaillou




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PostPosted: Nov 29, 2011 19:05    Post subject: Re: Jade  

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




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PostPosted: Nov 30, 2011 08:45    Post subject: Re: Jade  

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.

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Jordi Fabre
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PostPosted: Nov 30, 2011 08:49    Post subject: Re: Jade  

Tracy wrote:

...Still too early for cascaillou, but mihailovici79 can send a pm to set up a less public exchange.


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




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PostPosted: Nov 30, 2011 13:10    Post subject: Re: Jade  

ok sorry about this
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mihailovici79




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PostPosted: Dec 01, 2011 07:03    Post subject: Re: Jade  

Jade the other nuance of color. Jade Romania ft Amethyst Brasil


jad ft ametist 029.jpg
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jad ft ametist 037.jpg
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jad ft ametist 037.jpg



jad ft ametist 038.jpg
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jad ft ametist 038.jpg


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cascaillou




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PostPosted: Dec 01, 2011 18:03    Post subject: Re: Jade  

I received your private message with your email address, I'll keep in touch.
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cascaillou




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PostPosted: Feb 07, 2012 14:34    Post subject: Re: Jade  

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




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PostPosted: Feb 07, 2012 15:38    Post subject: Re: Jade  

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




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PostPosted: Feb 07, 2012 15:50    Post subject: Re: Jade  

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




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PostPosted: Feb 07, 2012 15:52    Post subject: Re: Jade  

:) Yeah you`re right
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Chris Foltz




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PostPosted: Nov 10, 2012 21:26    Post subject: Re: Jade  

Has a greasy look to it like serpentine ... doesn't look like jade from the pic...very translucent ...nice!
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tomfan




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PostPosted: Nov 11, 2012 03:06    Post subject: Re: Jade  

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.
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jade,soapstone,nehprite,chlorite,pyrophyllite,agate, chalcedony, any stone rough good enough for carving.
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Chris Foltz




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PostPosted: Nov 11, 2012 07:24    Post subject: Re: Jade  

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?


DSCN0476.JPG
 Description:
Antigorite
State Line Chrome Pits...
2" x 3"x1/2"
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DSCN0476.JPG



DSCN0479.JPG
 Description:
Antigorite
State Line Chrome Pits...
2x3x2cm
 Viewed:  22581 Time(s)

DSCN0479.JPG



DSCN0478.JPG
 Description:
Antigorite
State Line Area of Md/Pa
2" x 3"x1/2"
 Viewed:  22600 Time(s)

DSCN0478.JPG



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mihailovici79




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PostPosted: Nov 11, 2012 08:19    Post subject: Re: Jade  

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.



colectie 047.jpg
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Romania
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colectie 047.jpg



colectie 037.jpg
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Romania
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colectie 037.jpg



colectie 043.jpg
 Description:
Romania
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colectie 043.jpg



colectie 044.jpg
 Description:
Romania
 Viewed:  22565 Time(s)

colectie 044.jpg


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Chris Foltz




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PostPosted: Nov 11, 2012 13:33    Post subject: Re: Jade  

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




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PostPosted: Jan 03, 2013 15:58    Post subject: Re: Jade  

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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