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I’ve never seen opal.... is this opal?

Chubbs

Rough_Rock
Joined
Apr 23, 2020
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4
I found this while hiking in a canyon. I know nothing about this rock, it pretty neat so I packed it out.
Any information about this rock will be extremely appreciated.
259A0A7E-8E4E-47CB-9ABF-6B84819FFA4A.jpeg013646AB-C663-4E19-AAAB-68EDE7F88E39.jpeg0924853A-63F3-4F40-901C-B5617DFD4D6D.jpeg
 
Looks like white quartz to me but I’m not good at colored stones.
 
Where was it found?
Its not opal or quartz.
 
My guess is green Fluorite
 
I would've brought it home, too!
At first glance, I thought chalcedony.
Could also be variscite or nephrite Jade.
Jade is found in many Western States. Where did you find this?
 
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I would've brought it home, too!
At first glance, I thought chalcedony.
Could also be variscite or nephrite Jade.
Jade is found in many Western States. Where did you find this?

I found it at hells canyon in Idaho. It took me a while to pack it out because it weighed 70lbs
 
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I found it at hells canyon in Idaho. It took me a while to pack it out because it weighed 70lbs
This is a very non-scientific test.
See if you can scratch the smooth area with a stainless steel knife blade. If the blade can make a scratch into the stone , then it's not Jade, as Jade is very hard.
 
Ok I cut the stone and it made white marks easily. It seems pretty soft but glassy at the same time
 
Ok I cut the stone and it made white marks easily. It seems pretty soft but glassy at the same time
Darn, not Jade. I don't think opal either.
So I'm gonna go back to my first idea, chalcedony.
Just a guess!
Which is a type of quartz. (Like @AprilBaby said)
Here's a photo that is similar to your cool specimen.
I hope you can have it identified soon!
IMG_20200423_122927.jpg
 
This is a very non-scientific test.
See if you can scratch the smooth area with a stainless steel knife blade. If the blade can make a scratch into the stone , then it's not Jade, as Jade is very hard.

Stainless steel is between 5.5 and 6.3 on the Mohs scale. Jade is a 6 on the mohs scale of hardness, so harder than many stainless steel knives, but because of its fibrous nature, it is very tough. Jade is often carved because of its toughness and relative ease of scratching. I remember going to Gump's in San Francisco back in the late 70's or early 80's and visiting their jade display. What a joyous few hours I spent there.

Wink
 
Google "Idaho common opal"; the material has some uses & a harder, very white variety used in fine jewelry is often called "cacholong".
 
My best guesses -
Green Fluorite?


Green Apple Calcite?


Maybe a chalcedony?
 
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