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What Is this Turquoise Rock?

0 votes

I've had this turquoise rock/mineral/man made? sitting on my bookshelf for about two years that I thought was just slag until I looked at it again and realized that it just wasn't.

I did find it in a creek that contains a lot of blue slag, but I have a lot of blue slag and have a lot of experience with blue slag, and this isn't blue slag.

It's waxy. Sandpaper can get dust off of it, but it's very hard. It will not break, like slag glass will. It's solid. It has no air bubbles or folds in it like my other slag collections. It seriously looks like a speckled robin egg. It makes a very light blue/white streak on sand paper. Oh and I found it in Pennsylvania in a creek.


The Rock itself
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The Speckling
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The blue slag you usually get out of the creek color and air pockets
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The glossiness compared to a piece of slag.
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I was able to collect the dust from the sand paper and look at it under a very crappy microscope (sorry)

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asked Aug 13, 2014 by CrispyCookies (120 points)

1 Answer

0 votes

Turquoise from a creek in Pennsylvania seems like an unlikely occurrence. See if it has the other physical properties of turquoise though. If the creek is known to have slag, this could be a different form or a glass. Can you chip it to determine fracture? Also what other physical properties does it have, such as hardness and streak?

answered Aug 17, 2014 by hershel (47,740 points)

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