Grossular





 Location Found: Franklin and Ogdensburg
     
 Mineral Note: Locally nicknamed "caswellite"
     
 Formula: Ca3Al2(SiO4)3
 Essential Elements: Aluminum, Calcium, Oxygen, Silicon
 All Elements in Formula: Aluminum, Calcium, Oxygen, Silicon
     
 IMA Status: Approved
     
Fluorescent Mineral Properties

 Longwave UV light: Cherry red, very rare
     
 To find out more about this mineral at minDat's website, follow this link   Grossular

     
 References:
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.360

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.59


The Picking Table References
 PT Issue and PageDescription / Comment
V. 57, No. 2 - Fall 2016, pg. 19Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Grossular
V. 55, No. 1 - Spring 2014, pg. 19Fluorescent Grossular From Franklin, New Jersey - An Update
V. 52, No. 1 - Spring 2011, pg. 19Fluorescent Grossular From Franklin, New Jersey With Notes on Associated Gahnite
View IssueV. 6, No. 2 - August 1965, pg. 12Spessartite - Grossularite
     
Images

     
Grossular (non-fluorescent) with willemite veins and franklinite Franklin, NJ.Grossular (non-fluorescent) with willemite veins and franklinite Franklin, NJ. under shortwave UV Light
Grossular (white-beige) with willemite veins and franklinite from Franklin, New Jersey. Photo by WP.
Grossular with willemite veins and franklinite from Franklin, New Jersey under Shortwave UV light. The grossular and franklinite is non-fluorescent, the willemite fluoresces green. Photo by WP.







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