Connellite, a copper chlorine sulfate hydroxide hydrate mineral, was identified from Sterling Hill using X-ray methods only. It occurs as tiny blue microcrystals associated with aurichalcite and cuprite or with sarkinite (Peters et al., 1983). Because there was no direct confirmation of the presence of sulfur, there is some possibility, considering the use of nitrogen-based explosives, that this could be buttgenbachite. However, the common occurrence of small amounts of copper sulfates locally and the absence of secondary nitrate minerals at Sterling Hill, suggests that the crystals are connellite. Connellite has not been reported from Franklin. (Dunn, 1995)

 Location Found: Ogdensburg
 Year Discovered: 1850
 Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
 Essential Elements: Chlorine, Copper, Hydrogen, Oxygen, Sulfur
 All Elements in Formula: Chlorine, Copper, Hydrogen, Oxygen, 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   Connellite

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.632

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