CHRYSOCOLLA



Chrysocolla, a copper silicate hydroxide hydrate mineral, has been known from Franklin and Sterling Hill for a long time. The first mention of it was by Beck (1839), and it may have been the material reported by Seymour (1868) and Darton (1883). Palache (1935) reported it as an unconfirmed species, and Frondel (1972) reported its verification from Franklin. It was reported from both Franklin and Sterling Hill by Cook (1973), and it has been seen by [Dunn] associated with azurite and franklinite from Sterling Hill, but has not been studied. It is a minor mineral locally, blue in color, commonly but not consistently with dull luster, and occurring in handsized specimens. (Dunn, 1995)

 Location Found: Franklin and Ogdensburg
     
 
     
 Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O (x < 1)
 Essential Elements: Aluminum, Copper, Hydrogen, Oxygen, Silicon
 All Elements in Formula: Aluminum, Copper, Hydrogen, Oxygen, Silicon
     
 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   Chrysocolla

     
 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.492

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.50
The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 7, No. 2 - August 1966, pg. 8The Minerals of Sterling Hill 1962-65 by Frank Z. Edwards - Chrysocolla (small article)
     
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