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Ring Shaped Metallic Mineral in Rose Quartz

Posted by Robert Darabos  
Robert Darabos February 10, 2019 06:44PM
Rose Quartz from Zamibia. Unknown quarry or mine.
Some of these pieces have Tourmaline in the matrix.
This particular one had this ring shaped metallic-looking mineral.

No clue what it could be. Ideas?

Pavel Kartashov February 10, 2019 07:49PM
This is more similar to spot after drop of black ink...
Robert Darabos February 10, 2019 09:47PM
definitely not black ink.
Ed Clopton February 11, 2019 02:01PM
Maybe a tiny zenolith of country rock that reacted with the residual core fluid and ended up as a little ball of mica? It appears to have a concentric structure (cross-section of a sphere?) consistent with something soaking and reacting. The spot to the left could be the outer surface of an adjacent sphere.
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