Location Found: Ogdensburg
 Year Discovered: 1956
 Formula: Mn10As6O18(OH,Cl)2
 Essential Elements: Arsenic, Hydrogen, Manganese, Oxygen
 All Elements in Formula: Arsenic, Chlorine, Hydrogen, Manganese, Oxygen
 IMA Status: Approved
 To find out more about this mineral at minDat's website, follow this link   Magnussonite

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.672

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.66

The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 34, No. 2 - Fall 1993, pg. 13Recent Mineral Finds From The Sterling Mine Ogdensburg, New Jersey - Magnussonite
View IssueV. 25 No. 2 - Fall 1984, pg. 8Mineral Notes Research Reports, Magnussonite
View IssueV. 24, No. 1 - Spring 1983, pg. 6Recent Mineral Occurrences at Sterling Hill, Stephen B. Sanford, Magnussonite
View IssueV. 18, No. 1 - March 1977, pg. 11The Post Palache Minerals - Magnussonite
View IssueV. 12, No. 2 - August 1971, pg. 6Geological Notes - Magnussonite
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