Walstromite with Unknown Blue, Big Creek – Rush Creek Deposit, Fresno County, California, USA.

30.9.2016

 

Walstromite is pretty much limited to a few locations in the foothills of the Sierra Nevada mountain range in California. Here’s a very nice, and relatively large, specimen from the Big Creek – Rush Creek Deposit, Esquire #5 mine. The orangish walstromite glows best in midwave, but also nicely in shortwave; the unknown blue glows in all wavelengths. There's been much debate regarding the blue, and it's typically mis-id'd as celsian. However, preliminary testing reveals it is more likely a barium carbonate, and potentially witherite. More testing is forthcoming. The rock also holds tiny blue grains of Bazirite and small grains of green yellow fluorescing Fresnoite. This specimen is about six by five inches and weighs in at 1500 grams (exactly).

 

Shown in midwave, shortwave, longwave and natural.

Please reload

Recent GlowNotes Posts

Please reload

Visit the GlowNotes Blog to view more - educational posts, equipment, minerals, photography and displays

Related Posts:

Please reload

Email comments or suggestions:

Home

RSS Feed
  • reddit
  • Facebook Social Icon

Subscribe to our RSS (Real Simple Syndication) feed to get new posts delivered directly to your desktop!

Nature’s Rainbows is a non-commercial web site maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.


Feel free to contact us with comments and suggestions.

Like us on Facebook!