CHRYSOTILE VAR. CLINOCHRYSOTILE


Chrysotile var. clinochrysotile is not in the current Franklin Mineral Species List.
Clinochrysotile, a magnesium silicate hydroxide mineral of the serpentine group, was first reported by Aristarain et al. (1974), who found it associated with Franklin roweite and noted that it may occur in parallel growth or in complex intergrowths with roweite; this has not been investigated by [Dunn]. The serpentine reported by Shannon and Larsen (1926) is clinochrysotile, and that described as chrysotile by Foshag (1926) is largely clinochrysotile. It has also been found as pseudo-octahedral inclusions in Sterling Hill franklinite (Francis, 1990).
Clinochrysotile is the dominant serpentine-group mineral at both ore deposits, occurring in late-stage veins and as replacements. (Dunn, 1995)

 Location Found: Franklin and Ogdensburg
     
 Mineral Note: Removed from Franklin Mineral list in 2017
 Year Discovered: 1834
     
 Formula: Mg3(Si2O5)(OH)4
 Essential Elements: Hydrogen, Magnesium, Oxygen, Silicon
 All Elements in Formula: Hydrogen, Magnesium, Oxygen, Silicon
     
 IMA Status: Redefined Approved 2006 - Polytype of chrysotile.
     
Fluorescent Mineral Properties
 Shortwave UV light: Tan, weak brightness
 Mid wave UV light: Tan, weak brightness
 Longwave UV light: Tan, moderate to weak brightness
 Additional Information: Weakest fluorescence at shortwave
     
 To find out more about this mineral at minDat's website, follow this link   Chrysotile var. clinochrysotile

     
 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.485. 'Clinochrysotile'
The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 54, No. 1 - Spring 2013, pg. 17Fluorescent Chrysotile From Sterling Hill, New Jersey, James Van Fleet and Earl R. Verbeek, PhD
View IssueV. 45, No. 2 - Fall 2004, pg. 37Clinochrysotile: A Fluorescent Serpentine From Franklin, New Jersey
View IssueV. 31, No. 2 - Fall 1990, pg. 4Clinochrysotile Pseudomorphs From The Sterling Mine Ogdensburg, New Jersey
     
Images
     
Chrysotile variety clinochrysotile showing a cherty habit, from the North ore body, Sterling Hill Mine, NJ.
Chrysotile variety clinochrysotile (dark red to gemmy brown) showing a cherty habit, from the North ore body, Sterling Hill Mine, NJ. Non-fluorescent. From the collection of, and photo by JVF.






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