What is this crystal (blue crystal in marble rock)?

Reply Tue 14 Oct, 2014 11:53 am
Hi there! Smile

Some background information:
I went on a field trip for my Geomorphology class to Cantley Quarry, Quebec. It's a neat place that has lots of glacial landforms, and basically is made of marble.

Anyway, being the rock nerd that I am, I took a few nice rocks from the area. One of the marble rocks, to my surprise, had this little blue crystal poking out of it. I couldn't find any others around with crystals like that.

Well, I think it's pretty cool, and I'm keen to identify. My limited geology knowledge has me thinking that it's a little aquamarine crystal, based on the colour. I have no idea if beryls can form in marble, though.
So, what do you guys think? Here are a few pictures:




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Reply Tue 14 Oct, 2014 01:59 pm
Seems to be a zeolite which occurs in Quebec..

However, on this forum, some are more qualified than I am.

Reply Tue 14 Oct, 2014 04:18 pm
Tim you're doubtless better qualified than I, and I'm a rockhound
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Reply Tue 14 Oct, 2014 05:29 pm
Could be Aquamarine or a Beryl of some type.

It depends a lot on where you found it and what type of substrate it's embedded in.
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