Opal Butte
Morrow County, Oregon, USA
Opal Butte is a mountain in Oregon famed for producing specimens of Opal – hence the name!
The site produces a range of opal including common, precious and Opal-AN (hyalite).
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The best source of information on this locale is the 1988 article by Kevin Lane Smith, linked below from the GIA website.
I have not been able to find much more up to date information – including whether or not the West Coast Mining company is still operating.
Further reading
We may have specimens from specific locales around Oregon including:
OregonYou can also click here to go back to our main USA page.