Gahnite





 Location Found: Franklin and Ogdensburg
     
 
 Year Discovered: 1807
     
 Formula: ZnAl2O4
 Essential Elements: Aluminum, Oxygen, Zinc
 All Elements in Formula: Aluminum, Oxygen, Zinc
     
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
     
     
 To find out more about this mineral at minDat's website, follow this link   Gahnite

     
 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.578

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.57


The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 41, No. 1 - Spring 2000, pg. 13A Scheelite-bearing Assemblage From Franklin, New Jersey By Robert E. Jenkins II - Gahnite (Small description)
View IssueV. 32, No. 1 - Spring 1991, pg. 9An Uncommon Margarite/Corundum Assemblage From Sterling Hill, New Jersey, Pete J. Dunn, Clifford Frondel, Gahnite (small description)
View IssueV. 30, No, 2 - Fall 1989, pg. 19Research Reports, Franklinite-Gahnite Exsolution Intergrowths
View IssueV. 5, No. 1 - February 1964, pg. 9Mineral Notes - Zincite, Gahnite Genesis (small article)
     
Images

     
Gahnite crystal with minor calite from Sterling Hill, NJ
Gahnite crystal with minor calite from Sterling Hill, NJ, 1 3/4". From the collection of, and photo by Robert A. Boymistruk.







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