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Mineral identification


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IMO, looks like Rhyolite with a  vug in the rock caused by trapped gasses, containing possibly calcite or quartz crystals .

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To me quartz and calcite are hard to tell apart:

https://www.qsiquartz.com/what-are-the-differences-between-the-minerals-calcite-and-quartz/

I used to think a;; white crystals like that were automatically quartz, but if its softer could be calcite.

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2 hours ago, BMc said:

IMO, looks like Rhyolite with a  vug in the rock caused by trapped gasses, containing possibly calcite or quartz crystals .

 

2 hours ago, BMc said:

IMO, looks like Rhyolite with a  vug in the rock caused by trapped gasses, containing possibly calcite or quartz crystals .

Possibly a Dog Tooth calcite geode encased in the rock?

DOGTOOTH CALCITE GEODE.jpg

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6 hours ago, KarmaPolice said:

Thanks for your answers, as you suggested, I will try the put on it some vinegar or screach it on glass to check it out.

It will be a slow developing fizz if it's calcite.

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