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 Page	Description / Comment
View Issue	V. 20, No. 2 - September 1979, pg. 7	Contributions to the Mineralogy of Franklin and Sterling Hill New Jersey, Scorodite (small article)

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