Location Found: Franklin and Ogdensburg
 Formula: MgAl2O4
 Essential Elements: Aluminum, Magnesium, Oxygen
 All Elements in Formula: Aluminum, Magnesium, Oxygen
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Fluorescent Mineral Properties

 Shortwave UV light: Weak cherry-red
 Mid wave UV light: Weak cherry-red
 Longwave UV light: Moderately bright to weak cherry-red
 Additional Information: Fluoresces best at longwave
 To find out more about this mineral at minDat's website, follow this link   Spinel

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.583

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.78

The Picking Table References
 PT Issue and PageDescription / Comment
V. 58, No. 1 - Spring 2017, pg. 18Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 2, Richard C. Bostwick - Spinel
V. 57, No. 1 - Spring 2016, pg. 17Aluminum-Rich Mineral Assemblages at Lime Crest Quarry, Sparta Township, New Jersey, Warren Cummings
View IssueV. 27 No. 2 - Fall 1986, pg. 9Minerals of the Franklin Quarry, Philip P. Betancourt, Spinel Group (spinel?)
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