Hodgkinsonite





 Location Found: Franklin (Type Locality) and Ogdensburg, unique to Franklin/Ogdensburg area
     
 
 Year Discovered: 1913
     
 Formula: Mn2+Zn2(SiO4)(OH)2
 Essential Elements: Hydrogen, Manganese, Oxygen, Silicon, Zinc
 All Elements in Formula: Hydrogen, Manganese, Oxygen, Silicon, Zinc
     
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
     
Fluorescent Mineral Properties

 Mid wave UV light: Weak cherry-red
 Longwave UV light: Weak cherry-red
 Additional Information: Not all hodgkinsonite is fluorescent. Fluoresces weaker at longwave
     
 To find out more about this mineral at minDat's website, follow this link   Hodgkinsonite

     
 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.370

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.61


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 - Hodgkinsonite
View IssueV. 37, No. 1 - Spring 1996, pg. 19Closest-Packed Mineral Structures of Franklin-Ogdensburg: Kepler's Gift of the Snowflake, Part two of two parts, Paul B. Moore - Hodgkinsonite
View IssueV. 35, No. 1 - Spring 1994, pg. 9The Famous Late-Stage Oxysalt Minerals of Franklin-Ogdensburg: Closest-Packing and Oxidation-Reduction, Paul B. Moore, Hodgkinsonite as an Example
View IssueV. 33, No. 2 - Fall 1992, pg. 10The Check List of Franklin-Sterling Hill Fluorescent Minerals - Hodgkinsonite (Fluorescent Info, under LW not SW)
View IssueV. 24, No. 1 - Spring 1983, pg. 14Mineral Notes Research Reports, Hodgkinsonite
View IssueV. 22, No. 1 - March 1981, pg. 3Guerinite and Hawleyite from Sterling Hill, Pete J. Dunn, Hodgkinsonite
View IssueV. 18, No. 2 - September 1977, pg. 14The Fluorescent Minerals of Franklin and Sterling Hill, NJ by Richard C. Bostwick - Hodgkinsonite
View IssueV. 13, No. 2 - August 1972, pg. 12The Fluorescent Minerals of Franklin/Ogdensburg Area by Frank Z. Edwards - Hodgkinsonite (Fluorescent Info)
View IssueV. 13, No. 1 - February 1972, pg. 8Franklin Mineral Notes - Hodgkinsonite
View IssueV. 12, No. 2 - August 1971, pg. 4Geological Notes - Fluorescent Hodgkinsonite
View IssueV. 9, No. 1 - February 1968, pg. 14The Exclusive Minerals of Franklin/Ogdensburg, N.J. (as of January 1968) by Frank Z. Edwards - Hodgkinsonite (Short Note)
View IssueV. 6, No. 2 - August 1965, pg. 10Hodgkinsonite
View IssueV. 5, No. 1 - February 1964, pg. 8Mineral Notes - Hodgkinsonite (small article)
View IssueV. 2, No. 1 - February 1961, pg. 4Yellow "Hodgkinsonite" (small article about misidentification)
     
Images

     
Hodgkinsonite (lavender-pink) non-fluorescent, willemite (light green), calcite, franklinite, Franklin
Hodgkinsonite (lavender-pink) non-fluorescent, willemite (light green), calcite, franklinite from Franklin, NJ. From the collection of, and photo by JVF.


Hodgkinsonite, willemite, franklinite and minor barite from Franklin, NJ.
Hodgkinsonite (gemmy violet, beige, pink), willemite (light green), franklinite (black) and minor barite (white) from Franklin, NJ. From the collection of, and photo by Robert A. Boymistruk.


Hodgkinsonite, willemite and franklinite from Franklin, NJHodgkinsonite, willemite and franklinite from Franklin, NJ under longwave UV Light
Hodgkinsonite (gemmy violet, pink), willemite (light green) and franklinite (black) from Franklin, NJ. From the collection of, and photo by Robert A. Boymistruk.
Hodgkinsonite, willemite and franklinite from Franklin, NJ under longwave UV light. The hodgkinsonite fluoresces dark cherry and willemite green, the franklinite is non-fluorescent. From the collection of, and photo by Robert A. Boymistruk.
Hodgkinsonite, willemite and franklinite from Franklin, NJ under shortwave UV Light
Hodgkinsonite, willemite and franklinite from Franklin, NJ under shortwave UV light. The hodgkinsonite fluoresces cherry and willemite green, the franklinite is non-fluorescent. From the collection of, and photo by Robert A. Boymistruk.


Hodgkinsonite, barite and franklinite from Franklin, NJ
Hodgkinsonite (lavender-pink), barite (white) and franklinite (black) from Franklin, NJ. Field of view 2". From the collection of, and photo by Robert A. Boymistruk.







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