Popcorn Barite, Linwood Mine, Buffalo, Iowa

A plate of off-white barite crystals on a limestone matrix, from the Linwood Mine, Buffalo, Scott Co., Iowa. This particular material is known locally as "Popcorn Barite," and is brightly fluorescent and phosphorescent. Under short wave UV (254nm) the barite shows a bright blue/white fluorescent response with blue/green phosphorescence. The barite shows a similar fluorescent response under long wave UV (365nm) with dim green phosphorescence. Approximate dimensions are 14 x 10 x 5 cm.

Mouse over the scrolling images for wavelength information.

Email comments or suggestions:

Home

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!

  • reddit
  • Facebook Social Icon

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