Piemontite



Piemontite, a calcium manganese aluminum silicate hydroxide mineral of the epidote group, was described from Sterling Hill by Jenkins (1994). It was stated to occur as pink microcrystals associated with johnbaumite and barite. The reported analysis is grossly inadequate for interpretation. Piemontite has not been reported from Franklin. (Dunn, 1995)

 Location Found: Ogdensburg
     
 
 Year Discovered: 1758
     
 Formula: {Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
 Essential Elements: Aluminum, Calcium, Hydrogen, Manganese, Oxygen, Silicon
 All Elements in Formula: Aluminum, Calcium, Hydrogen, Manganese, Oxygen, Silicon
     
 IMA Status: Approved
     
     
 To find out more about this mineral at minDat's website, follow this link   Piemontite

     
 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.407


The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 35, No. 1 - Spring 1994, pg. 21Geology and Mineralogy of a Veinlet Assemblage Associated With Wollastonite-Bearing Rocks, Sterling Mine, Ogdensburg, New Jersey, Robert E. Jenkins II - Piemontite
     
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