Humite



Humite, a magnesium silicate hydroxide mineral of the humite group, has not been studied from the local marble quarries. It has been reported (Dunn, 1985a) as highly manganoan and zincian material from the orebodies at both Franklin and Sterling Hill. At Franklin, manganoan humite occurs as brown blebby crystals with much calcite and minor franklinite, willemite, and zincite. At Sterling Hill, manganoan humite is brown and associated with franklinite, calcite, and minor willemite. Humite has been observed as a reaction rim on apparent tephroite (Dunn, 1985a), and it coexists with chondrodite, but no studies have been made of the possible partitioning of cations between these species. The humite reported by Palache (1910) may have been norbergite or chondrodite. (Dunn, 1995)

 Location Found: Franklin and Ogdensburg
     
 
 Year Discovered: 1813
     
 Formula: (Mg,Fe2+)7(SiO4)3(F,OH)2
 Essential Elements: Fluorine, Magnesium, Oxygen, Silicon
 All Elements in Formula: Fluorine, Hydrogen, Iron, Magnesium, Oxygen, Silicon
     
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
     
Fluorescent Mineral Properties

 Shortwave UV light: Weak pale yellow
     
 To find out more about this mineral at minDat's website, follow this link   Humite

     
 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.347

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.62


The Picking Table References
 PT Issue and PageDescription / Comment
V. 57, No. 2 - Fall 2016, pg. 20Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Humite
View IssueV. 16, No. 2 - August 1975, pg. 7The Olivine and Humite Groups at Franklin-Sterling Hill by David A. Cook
View IssueV. 12, No. 2 - August 1971, pg. 7New Minerals for Franklin-Sterling Validated List - Humite (small article)
     
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