Common white opal on fire agate/chalcedony specimen?

[Steve1236]

Pretty cool specimen I just cleaned up a bit, I'm curious if the solid white mineral in the first couple of pics could be common opal? It fluorescence brighter white under short wave uv, it's real brittle and a piece of sharp chalcedony scratches it very easily, I've never found any opal before so I'm kinda clueless, any opinions would be appreciated.

 

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[Kray Gelder]

That chunk has a lot going on! I don't know much about finding opal, but opal has a hardness of 5-6, vs agate of 7, and it is a brittle stone, particularly when drying out. No crystal formation with the white stuff, and fairly uniform color. I'd say that's a good call. Nice specimen.

 

[Steve1236]

Thanks Kray, I was reading this article and apparently opal is found in this spot in Arizona attached to fire agate so I dont see why my spot wouldn't, I always look for dark colors when I'm digging or collecting fire agates so I could of missed opal somewhere easily out there, now I'm really itching for this summer heat to end so I can get back out there.