CHRYSOTILE



Chrysotile is a magnesium silicate hydroxide mineral of the serpentine group.
Clinochrysotile, 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)
Orthochrysotile, occurs admixed with clinochrysotile from Franklin and may occur at Sterling Hill as well. The occurrences of orthochrysotile require much additional study. (Dunn, 1995)

 Location Found: Franklin and Ogdensburg
     
 Mineral Note: Chrysotile includes the varities, clinochrysotile, orthochrysotile and parachrysotile
     
 Formula: Mg3(Si2O5)(OH)4
 Essential Elements: Hydrogen, Magnesium, Oxygen, Silicon
 All Elements in Formula: Hydrogen, Magnesium, 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   Chrysotile

     
 References:
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. 57, No. 2 - Fall 2016, pg. 15Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Chrysotile
View IssueV. 54, No. 1 - Spring 2013, pg. 17Fluorescent Chrysotile From Sterling Hill, New Jersey (Long article, many images)
View IssueV. 30, No, 2 - Fall 1989, pg. 3Notes from the Laboratory & Changes to the List of Species From Franklin and Sterling Hill, Pete J. Dunn, John L. Baum, Chrysotile
View IssueV. 9, No. 2 - August 1968, pg. 10Mineralogical Data - Chrysotile/Antigorite
View IssueV. 7, No. 2 - August 1966, pg. 8The Minerals of Sterling Hill 1962-65 by Frank Z. Edwards - Chrysotile (small article)
     
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.

Chrysotile (fibrous), franklinite, calcite and minor willemite from the Sterling Hill Mine, Ogdensburg, NJ
Chrysotile (fibrous brown, green), franklinite (black), calcite (white) and minor willemite (reddish brown) from the Sterling Hill Mine, Ogdensburg, NJ. Field of view 1 1/2". From the collection of JVF, and photo by WP.






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