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Opaque black Quartz, Locality info/matrix info?
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James Catmur
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PostPosted: Jul 16, 2020 07:20    Post subject: Re: Opaque black Quartz, Locality info/matrix info?  

Riccardo Modanesi wrote:
Hi to everybody! James, yes, transparent obsidian DOES exist, it's called "apache tears", small spheres in perlite, from Arizona, USA and Mexico (I don't remember the proper locality anymore, I apologize).
Greetings from Italy by Riccardo.


James Catmur wrote:
briggzi31 wrote:
about as opaque as black obsidian


I have Obsidian that is totally transparent (although my best piece was stolen)


Riccardo, I have transparent obsidian tools from when I lived in Mexico (as a child). Mainly from Tepoztlán, Morelos, Mexico but who knows where the Aztecs got the obsidian from
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PostPosted: Jul 16, 2020 13:49    Post subject: Re: Opaque black Quartz, Locality info/matrix info?  

Thank you all for your hard work!! It means so much to me.

@Volkmar, the second quartz makes more sense that spessartine, I just assumed because the color matches spessartines, and it was transparent and smokey/spessartines is a common combination found in China. But I see now that the elongated shape would suggest quartz.

To clarify what I mean when I said as opaque as black obsidian, I meant as opaque as the massive black obsidian that is very commonly available. I have picked some up myself on the coast of California, as well as near Portland, Oregon. When held up to a light, only the edges where the quartz crystal is very thin are transparent, and only slightly so, just like massive black obsidian is. I have included a picture from my collection for reference. Hope that clears up any confusion!

Best,
Sam



Obisidian.JPG
 Mineral: Obsidian
 Locality:
[unknown locality]
 Dimensions: 25cm * 10cm * 6cm
 Description:
The Morion quartz is as opaque as this.
 Viewed:  179 Time(s)

Obisidian.JPG


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