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127,167 users

Trying to identify this strange blue rock I found on the Rogue River, and ideas?

0 votes

The stone has a black relatively easy to scratch and light to deep blue semi translucent to clear bits of presumably a whole stone.

I have tried looking and came up with a few possibilities. Blue Agate, Blue Quartz, Or and only because of the area, Blue Opal. 

I'm new to rockhoounding, and have found a few pieces of this stuff now. Now I'm curious about it because nobody has ever seen it before.

Any help would be appreciated.


asked Feb 19, 2017 by davidbriggspdx (120 points)

3 Answers

0 votes
It doesn't seem to have opalescence. Curious as to what area you are refering. Agate and quartz are very hard. Seldom see cracks or fissures, but rather conchoidal fractures like on arrowheads. I am going to google a few things for better perspective perhaps with an assist I can give a better answer.
answered Feb 22, 2017 by Weasel (58,980 points)
0 votes
Its definitely not typical-looking material. It's one of those things that can be visually difficult to distinguish and would need some sort of testing for positive identification.
answered Apr 27, 2017 by hershel (52,800 points)
0 votes
I believe it to be blue fluorite in it's natural form.
answered May 4, 2017 by M45crystals (860 points)