Holdenite





 Location Found: Franklin (Type Locality) and Ogdensburg, unique to Franklin/Ogdensburg area
     
 
 Year Discovered: 1921
     
 Formula: (Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8
 Essential Elements: Arsenic, Hydrogen, Manganese, Oxygen, Silicon, Zinc
 All Elements in Formula: Arsenic, Hydrogen, Magnesium, Manganese, Oxygen, Silicon, 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   Holdenite

     
 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.376

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.61


The Picking Table References
 PT Issue and PageDescription / Comment
V. 57, No. 2 - Fall 2016, pg. 20Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Holdenite
View IssueV. 37, No. 1 - Spring 1996, pg. 19Closest-Packed Mineral Structures of Franklin-Ogdensburg: Kepler's Gift of the Snowflake, Part two of two parts, Paul B. Moore - Holdenite
View IssueV. 24, No. 1 - Spring 1983, pg. 6Recent Mineral Occurrences at Sterling Hill, Stephen B. Sanford, Holdenite
View IssueV. 23, No. 1 - Spring 1982, pg. 12Mineral Notes Research Reports, Holdenite
View IssueV. 9, No. 1 - February 1968, pg. 14The Exclusive Minerals of Franklin/Ogdensburg, N.J. (as of January 1968) by Frank Z. Edwards - Holdenite (Short Note)
     
Images

     
Holdenite, willemite, franklinite and calcite from Sterling Hill Mine, Ogdensburg, NJ
Holdenite (pink), willemite (reddish brown), franklinite (black) and calcite (white to light tan) from the Sterling Hill Mine, Ogdensburg, NJ. 3 5/8" x 2 1/4". From the collection of, and photo by Robert A. Boymistruk.







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