Bassanite, a calcium sulfate hydrate mineral, was first reported from Sterling Hill by Fred Parker [in a letter in the The Picking Table, 17, #2, 4]. It subsequently was verified by [Dunn] as white, massive microcrystalline material, using X-ray diffraction methods, but no physical or chemical data have been obtained. It has not been reported from Franklin. (Dunn, 1995)

 Location Found: Ogdensburg
 Year Discovered: 1910
 Formula: CaSO4 · 0.5H2O
 Essential Elements: Calcium, Hydrogen, Oxygen, Sulfur
 All Elements in Formula: Calcium, Hydrogen, Oxygen, Sulfur
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Fluorescent Mineral Properties

 Shortwave UV light: Violet
 Additional Information: Phosphoresces violet, very rare
 To find out more about this mineral at minDat's website, follow this link   Bassanite

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.630

The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 57, No. 2 - Fall 2016, pg. 13Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Bassanite
View IssueV. 33, No. 2 - Fall 1992, pg. 10The Check List of Franklin-Sterling Hill Fluorescent Minerals - Bassanite (Fluorescent Info)
View IssueV. 17, No. 2 - September 1976, pg. 4New Minerals - Bassanite/Tilasite (small article)
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