SELIGMANNITE



Seligmannite, a lead copper arsenic sulfide mineral, occurs at Sterling Hill, but has not been reported from Franklin. It occurs as tiny clusters of aggregates of microscopic crystals, black and highly lustrous, and also as highly distorted crystals, which might have adopted their shape in part from the calcite matrix.
No analytical data exist, and no properties were determined; verification is solely on the basis of X-ray diffraction data. Sterling Hill seligmannite occurs in the same assemblage as baumhauerite. It has been found but once. (Dunn, 1995)


 Location Found: Ogdensburg
     
 
 Year Discovered: 1901
     
 Formula: PbCuAsS3
 Essential Elements: Arsenic, Copper, Lead, Sulfur
 All Elements in Formula: Arsenic, Copper, Lead, Sulfur
     
 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   Seligmannite

     
 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.553


     
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