Location Found: Franklin (Type Locality)
 Year Discovered: 1981
 Formula: Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O
 Essential Elements: Aluminum, Boron, Calcium, Hydrogen, Oxygen, Sulfur
 All Elements in Formula: Aluminum, Boron, Calcium, Hydrogen, Oxygen, Silicon, Sulfur
 IMA Status: Approved 1981
Fluorescent Mineral Properties

 Shortwave UV light: Moderately bright pale blue
 Additional Information: Often coated with thin crusts of cream fluorescing gypsum
 To find out more about this mineral at minDat's website, follow this link   Charlesite

Dunn, Pete J. (1995). Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits. Franklin, NJ.: The Franklin-Ogdensburg Mineralogical Society. p.631

The Picking Table References
 PT Issue and PageDescription / Comment
V. 57, No. 2 - Fall 2016, pg. 15Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Charlesite
View IssueV. 33, No. 2 - Fall 1992, pg. 10The Check List of Franklin-Sterling Hill Fluorescent Minerals - Charlesite (Fluorescent Info)
View IssueV. 25 No. 1 - Spring 1984, pg. 6Mineral Notes Research Reports, Charlesite
View IssueV. 24, No. 1 - Spring 1983, pg. 12Mineral Notes A Mineral New To Science, Charlesite

Charlesite crystals on datolite and hancockite from Franklin, NJ
Charlesite crystals (white) on datolite (pink) and hancockite (redish brown to brown) from Franklin, NJ. Photo by Robert A. Boymistruk.

All content including, but not limited to, mineral images, maps, graphics, and text on the Franklin-Ogdensburg Mineralogical Society, Inc. (FOMS) website is licensed under a
Creative Commons Attribution-NonCommercial 4.0 International License.
Creative Commons License