Berthierite, an iron antimony sulfide mineral, was reported by Palache (1941b) as "needles of an antimony compound" from Sterling Hill. Subsequent examination of these by Cook (1973), and by [Dunn] using X-ray diffraction and energy-dispersive analytical methods, established that some of them are berthierite (see also zinkenite). The crystals are 0.5 mm in length, black, and acicular. The associated minerals are the same as given for realgar from the 900 level of Sterling Hill. Baumhauerite is not known from Franklin. (Dunn, 1995)

 Location Found: Ogdensburg
 Year Discovered: 1827
 Formula: FeSb2S4
 Essential Elements: Antimony, Iron, Sulfur
 All Elements in Formula: Antimony, Iron, 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   Berthierite

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

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.45

The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 14, No. 1 - February 1973, pg. 10Mineral Notes - Berthierite (small article)
View IssueV. 13, No. 2 - August 1972, pg. 14Additional Mineral Data - Berthierite (small article)
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