Talc





 Location Found: Franklin and Ogdensburg
     
 
     
 Formula: Mg3(Si4O10)(OH)2
 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"
     
Fluorescent Mineral Properties

 Shortwave UV light: Yellow, moderate brightness
 Mid wave UV light: Yellow, moderate brightness
 Longwave UV light: Yellow, moderate brightness
     
 To find out more about this mineral at minDat's website, follow this link   Talc

     
 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.505

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.79


The Picking Table References
 PT Issue and PageDescription / Comment
V. 58, No. 1 - Spring 2017, pg. 19Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 2, Richard C. Bostwick - Talc
View IssueV. 33, No. 2 - Fall 1992, pg. 11The Check List of Franklin-Sterling Hill Fluorescent Minerals - Talc (Fluorescent Info)
View IssueV. 27 No. 2 - Fall 1986, pg. 10Minerals of the Franklin Quarry, Philip P. Betancourt, Talc
View IssueV. 18, No. 2 - September 1977, pg. 19The Fluorescent Minerals of Franklin and Sterling Hill, NJ by Richard C. Bostwick - Talc
View IssueV. 7, No. 2 - August 1966, pg. 13The Minerals of Sterling Hill 1962-65 by Frank Z. Edwards - Talc (small article)
     
Images

     
Talc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJTalc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under longwave UV Light
Talc (light gray green), sphalerite (light redish tan, tan, gray), franklinite (black) and willemite from the Sterling Hill Mine, Ogdensburg, NJ. 4 1/2" x 2 1/4". From the collection of JVF, photo by WP.
Talc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under longwave UV light. The talc fluoresces weak dull yellow, sphalerite purple, orange and red, the franklinite and willemite are non-fluorescent. 4 1/2" x 2 1/4". From the collection of JVF, photo by WP.
Talc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under midwave UV LightTalc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under shortwave UV Light
Talc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under midwave UV light. The talc fluoresces weak dull yellow, sphalerite blue, purple, orange, willemite green the franklinite is non-fluorescent. 4 1/2" x 2 1/4". From the collection of JVF, photo by WP.
Talc, sphalerite, franklinite and willemite from the Sterling Hill Mine, Ogdensburg, NJ under shortwave UV light. The talc fluoresces weak dull yellow, sphalerite blue, purple, orange, willemite green the franklinite is non-fluorescent. 4 1/2" x 2 1/4". From the collection of JVF, photo by WP.







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