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Mysterious inclusions
https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=19&t=12228
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Author:  Egor Gavrilenko [ Tue Sep 14, 2010 5:59 pm ]
Post subject:  Mysterious inclusions

Ok, here is my quiz!
Just identify these black inclusions, the host mineral and the country of origin for this stone.

The prize - the honor to be the best !!! :D :D :D

At the morning:
Image

And the night view:
Image

Author:  mehoose [ Tue Sep 14, 2010 8:15 pm ]
Post subject:  Re: Mysterious inclusions

:shock: Way cool whatever it is. Looking forward to the answers. :lol:

Author:  empress [ Tue Sep 14, 2010 9:42 pm ]
Post subject:  Re: Mysterious inclusions

Sea urchins!

Author:  Barbra Voltaire [ Tue Sep 14, 2010 10:40 pm ]
Post subject:  Re: Mysterious inclusions

I've seen goethite inclusions in quartz that kinda look like this.....

Author:  Egor Gavrilenko [ Wed Sep 15, 2010 3:34 am ]
Post subject:  Re: Mysterious inclusions

empress wrote:
Sea urchins!

Could be, but I don't like fossils. :D

Barbra Voltaire wrote:
I've seen goethite inclusions in quartz that kinda look like this.....

Ok, good shot! :smt063
You are right about the host mineral, but it's not goethite! [-X

Author:  Tim [ Wed Sep 15, 2010 4:09 am ]
Post subject:  Re: Mysterious inclusions

It could be hollandite in Madagascan Quartz... (Gubelin & Koivula Photoatlas vol. 2 page 610) or what the same authors describe as 'an unknown iron compound' in a citrine from Rio Grande do Sol, Brazil (same volume page 572)

Author:  Osman khattak [ Wed Sep 15, 2010 4:49 am ]
Post subject:  Re: Mysterious inclusions

Antimony-giessenite in a quartz from Pakistan.

Author:  Egor Gavrilenko [ Wed Sep 15, 2010 6:39 am ]
Post subject:  Re: Mysterious inclusions

Osman khattak wrote:
Antimony-giessenite in a quartz from Pakistan.

Nops! :(
Never have seen it. Is it similar to those inclusions?

Tim wrote:
It could be hollandite in Madagascan Quartz... (Gubelin & Koivula Photoatlas vol. 2 page 610)

Well, you just couldn't fail in a quiz with this mineral!
The next hint I was thinking to give is: "when you say it's name you see tulips, mills and red lights!..." But it wasn't necessary!

Well done Tim!!! =D> =D> =D>

The prize is for you! Image

It's hollandite in quartz from Madagascar. I cut it myself to see better these inclusions.

Author:  Nikolaus Lackner [ Wed Sep 15, 2010 6:54 am ]
Post subject:  Re: Mysterious inclusions

=D> Congrats Tim! Well done Bro!

Author:  Jason [ Wed Sep 15, 2010 7:41 am ]
Post subject:  Re: Mysterious inclusions

Cool, Tim! That was impressive!

Author:  Osman khattak [ Wed Sep 15, 2010 8:31 am ]
Post subject:  Re: Mysterious inclusions

Well done Tim
=D> =D>

Author:  Barbara O. Ellis [ Wed Sep 15, 2010 8:43 am ]
Post subject:  Re: Mysterious inclusions

Dang! I only have Volume 1 of the Photoatlas and it wasn't in there :lol: .

Author:  mehoose [ Wed Sep 15, 2010 12:29 pm ]
Post subject:  Re: Mysterious inclusions

=D> Not just a pretty face eh? :wink:

Hey MoDo, sounds like a good excuse to get anothery.

Author:  Barbara O. Ellis [ Wed Sep 15, 2010 4:20 pm ]
Post subject:  Re: Mysterious inclusions

I need Volumes 2 and 3!! 8)

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