Pennantite





 Location Found: Franklin
     
 Mineral Note: Pennantite replaces grovesite in name, "The Picking Table, Fall 1990"
 Year Discovered: 1946
     
 Formula: Mn52+Al(AlSi3O10)(OH)8
 Essential Elements: Aluminum, Hydrogen, Manganese, Oxygen, Silicon
 All Elements in Formula: Aluminum, Hydrogen, Manganese, Oxygen, Silicon
     
 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   Pennantite

     
 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.471. 'Pennantite-1a'


The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 31, No. 2 - Fall 1990, pg. 3Notes from the Laboratory & Changes to the List of Species From Franklin and Sterling Hill, Pete J. Dunn, John L. Baum, Pennantite
     
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