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!

Calcite, Cave-In-Rock, Illinois

23.11.2016

Wheat sheaf bundles of parallel growth calcite crystals on a yellow/brown fluorite matrix, from Cave-In-Rock, Hardin County, Illinois.  Under short wave UV, the calcite shows a bright blue/white fluorescent response with brief dim phosphorescence.  Under long wave UV, the response is a warmer white.  The fluorite matrix is poorly fluorescent.  This specimen measures 64.1 x 57 x 44.5 mm, and weighs 86 grams.

 

 

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