Sillimannite





 Location Found: Ogdensburg
     
 
 Year Discovered: 1824
     
 Formula: Al2(SiO4)O
 Essential Elements: Aluminum, Oxygen, Silicon
 All Elements in Formula: Aluminum, 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   Sillimannite

     
 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.382

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.76


     
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