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Identity HelpNeed help identifying plesse

21st Oct 2019 14:04 UTCJulie Krueger

I found this rock (10 lbs) in a campground in Glacier Park Montana. Any idea of what it is? This is a pic of the rock being wet with water. When its dry, it's a dull green. Could it possibly be Jadeite?

21st Oct 2019 14:09 UTCBob Harman

JULIE,    If you were in Glacier National Park,  most importantly, collecting this and anything in a National Park is illegal.

No further reply from me until a specific collection locality is given .................

21st Oct 2019 20:02 UTCMatt Ciranni

I'm gonna give her the benefit of the doubt and assume that if she DID find it within the national park boundaries, that she photographed it and then left it there where she found it, with no further questions asked. 

And I would make this same assumption for anyone who found and photographed a rock within a national park border- just to stave off the inevitable "your not supposed to collect in national parks, blah blah blah" lecture.

I don't think it's jade- most likely either some kind of schist or maybe some kind of igneous rock- gabbro, maybe.

21st Oct 2019 22:03 UTCRichard Gibson

It's probably a rounded chunk of the Appekunny formation, a relatively dense, hard siltstone that is often just about this color of green. Not likely to be jadeite. 
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