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13 Dec-01:23:55 Re: micro photos of inclusions in quartz (Zbhjzm)
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Micro photos of inclusions in Quartz
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zbhjzm




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PostPosted: Nov 20, 2017 08:36    Post subject: Re: Micro photos of inclusions in Quartz  

Strange hemispheres in quartz.(probably some kind of hematite)


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Pete Richards
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PostPosted: Nov 20, 2017 12:35    Post subject: Re: Micro photos of inclusions in Quartz  

Yes, I would think the hemispheres are hematite as are the larger crystals.

An experiment you might try: put a polarizing filter between your specimen and the camera or microscope. I bet you could get rid of the double images in your photomicrographs.

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zbhjzm




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PostPosted: Nov 21, 2017 02:19    Post subject: Re: Micro photos of inclusions in Quartz  

Pete Richards wrote:
Yes, I would think the hemispheres are hematite as are the larger crystals.

An experiment you might try: put a polarizing filter between your specimen and the camera or microscope. I bet you could get rid of the double images in your photomicrographs.


Yes, it works!
Thank you very much.



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hemisphere back 4.jpg
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zbhjzm




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PostPosted: Nov 21, 2017 12:27    Post subject: Re: Micro photos of inclusions in Quartz  

Dendritic inclusions(possibly pyrolusite).
Yellow dumortierite inclusions(probably colored by iron oxide).



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zbhjzm




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PostPosted: Nov 23, 2017 03:49    Post subject: Re: Micro photos of inclusions in Quartz  

More hematite inclusions.


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zbhjzm




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PostPosted: Nov 23, 2017 03:51    Post subject: Re: Micro photos of inclusions in Quartz  

Red needles in quartz.


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zbhjzm




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PostPosted: Nov 23, 2017 03:53    Post subject: Re: Micro photos of inclusions in Quartz  

Unknown inclusion.(possibly Talc)


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zbhjzm




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PostPosted: Nov 25, 2017 12:54    Post subject: Re: Micro photos of inclusions in Quartz  

Unknown inclusions.


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PostPosted: Dec 06, 2017 05:51    Post subject: Re: Micro photos of inclusions in Quartz  

Calcite inclusions in Quartz


Calcite 1.jpg
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PostPosted: Dec 08, 2017 04:10    Post subject: Re: Micro photos of inclusions in Quartz  

Garnet inclusions.


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zbhjzm




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PostPosted: Dec 10, 2017 21:45    Post subject: Re: Micro photos of inclusions in Quartz  

Radioactive inclusions in quartz, most likely to be uraninite. Tension fractures and dark halos are caused by radiation damage.


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zbhjzm




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PostPosted: Dec 11, 2017 07:03    Post subject: Re: Micro photos of inclusions in Quartz  

Another specimen with uraninite inclusions.


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zbhjzm




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PostPosted: Dec 13, 2017 01:23    Post subject: Re: Micro photos of inclusions in Quartz  

Pyrite cubes in quartz.
Pyrite inclusions in quartz are usually small and shapeless, a specimen like this one is actually quite rare.



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