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Post by cabby on Jul 5, 2024 16:24:27 GMT -5
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realrockhound
Cave Dweller
Chucking leaverite at tweekers
Member since June 2020
Posts: 4,023
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Obsidian?
Jul 5, 2024 16:27:18 GMT -5
via mobile
Post by realrockhound on Jul 5, 2024 16:27:18 GMT -5
Based on all that stuff stuck to it, I’m thinking slag. Never seen obsidian like that.,
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ThomasT
has rocks in the head
![*](//storage.proboards.com/forum/images/stars/star_pink.png) ![*](//storage.proboards.com/forum/images/stars/star_pink.png)
Member since June 2022
Posts: 586
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Post by ThomasT on Jul 5, 2024 16:35:25 GMT -5
Looks kinda like some stuff I saw a long time ago from a long stretch of a New Mexico lava flow... Snow Flake Obsidian maybe...
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Post by cabby on Jul 5, 2024 16:48:43 GMT -5
Took a look with magnification. Hard for me to see clearly with a migraine but the “bubbles” are definitely some other type of mineral, something matte light blue with a radial pattern. Also finding spots that are a somewhat metallic iridescence, mostly electric blue with a bit of bright orange red? Not sure what to expect either slag or obsidian to look like.
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Post by cabby on Jul 5, 2024 16:58:21 GMT -5
Can’t look anymore for awhile but when I changed the angle of the light the balls looked more of a lilac color and the iridescent areas became green and hot pink 😮
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Obsidian?
Jul 5, 2024 21:30:21 GMT -5
via mobile
Post by cabby on Jul 5, 2024 21:30:21 GMT -5
I went waaaay down the rabbit hole with this one and overwhelmed my poor brain! From what I can tell, it basically *is* snowflake obsidian, just with much smaller “snowflakes” and they developed in “train tracks” instead of speckled all over. Now I won’t be as upset when I keep finding more and more of it 😆 I don’t mind as long as it isn’t a “collection” of industrial waste!
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Post by cabby on Jul 5, 2024 21:43:27 GMT -5
More or less expect it to look like these examples, after slabbing the bigger ones. ![](https://res.cloudinary.com/forum-rocktumblinghobby-com/image/upload/v1720233797/ijvdah7pndemjbfnekdf.webp) ![](https://res.cloudinary.com/forum-rocktumblinghobby-com/image/upload/v1720233797/mdmetjerm5g5xt2oimpg.jpg)
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Post by vegasjames on Jul 5, 2024 21:49:13 GMT -5
Does look like snowflake obsidian, which has spherule crystals of whitish or grayish cristobalite (a type of quartz)
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Post by cabby on Jul 5, 2024 22:27:58 GMT -5
Does look like snowflake obsidian, which has spherule crystals of whitish or grayish cristobalite (a type of quartz) The spheres on these ones are so tiny that it looks more like bubbles in the glass until I used magnification. Realized it probably wasn’t slag but had NO idea that snowflake obsidian can look like that, so skipped considering it even though I knew it was spherulitic as well… wasted hours just to circle back lol
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Post by susand24224 on Jul 6, 2024 2:35:54 GMT -5
I have snowflake that looks like that. I also have obsidian with similar "attachments," although not snowflake.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,507
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Post by RWA3006 on Jul 6, 2024 15:11:48 GMT -5
I'm certain it's snowflake obsidian. I've picked up a fair amount of it myself.
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