Editing Opal (section)

=== Other locations ===
[[File:62cts Brazilian Crystal Opal.JPG|thumb|Brazilian opal]]

Another source of white base opal or creamy opal in the United States is [[Spencer, Idaho]].<ref>{{Cite news|url=https://www.eastidahonews.com/2015/08/future-of-spencer-opal-mining-uncertain/|title=If you've ever wanted an opal – it's time to visit Spencer {{!}} East Idaho News|date=2015-08-06|work=East Idaho News|access-date=2018-02-14}}</ref> A high percentage of the opal found there occurs in thin layers.

Other significant deposits of precious opal around the world can be found in the Czech Republic, Canada, Slovakia, Hungary, Turkey, Indonesia, Brazil (in [[Pedro II, Piauí]]<ref>{{cite web |url=http://www.mindat.org/gallery.php?loc=8782 |title=Boi Morto Mine, Pedro II, Piauí, Brazil |website=Mindat.org |access-date=8 October 2011 |url-status=live |archive-url=https://web.archive.org/web/20110512015022/http://www.mindat.org/gallery.php?loc=8782 |archive-date=12 May 2011 |df=dmy-all }}</ref>), Honduras (more precisely in [[Erandique]]), Guatemala, and Nicaragua.

In late 2008, [[NASA]] announced the discovery of opal deposits on [[Mars]].<ref>{{cite web|url=http://www.jpl.nasa.gov/news/news.cfm?release=2008-198|title=NASA probe finds opals in Martian crevices|website=[[Jet Propulsion Laboratory]]|access-date=29 October 2008|url-status=live|archive-url=https://web.archive.org/web/20090119103930/http://www.jpl.nasa.gov/news/news.cfm?release=2008-198|archive-date=19 January 2009|df=dmy-all}}</ref>