🔎 UNIDENTIFIED What is this mineral?

[amizengo]

 

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[Red-Coat]

Judging by the number of bubbles, I would say it's man-made slag glass.

 

[RustyGold]

Looks like glass.

 

[unclemac]

it is the bubbles.... not what you would see with a rock

 

[unclemac]

it is the bubbles.... not what you would see with a rock