Scorodite



Scorodite, a ferric-iron arsenate hydrate mineral, was reported from Sterling Hill by Dunn (1979c). It occurs with pharmacosiderite on the 340 level. The light-yellow, euhedral crystals are less than 1 mm in size. Partial analysis indicates they are near end-member composition, with Mn and Mg absent, and Zn present in but traces. Although rare locally, scorodite was also verified from the arsenate assemblage on the 180 level where it occurred as small, blue, pseudo-octahedral crystals with sphalerite and koettigite. It is best verified using X-ray methods. Scorodite has not been reported from Franklin. (Dunn, 1995)

 Location Found: Ogdensburg
     
 
 Year Discovered: 1818
     
 Formula: Fe3+AsO4 · 2H2O
 Essential Elements: Arsenic, Hydrogen, Iron, Oxygen
 All Elements in Formula: Arsenic, Hydrogen, Iron, Oxygen
     
 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   Scorodite

     
 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.682


The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 20, No. 2 - September 1979, pg. 7Contributions to the Mineralogy of Franklin and Sterling Hill New Jersey, Scorodite (small article)
     
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