Roeblingite





 Location Found: Franklin (Type Locality)
     
 
 Year Discovered: 1897
     
 Formula: Pb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2 · 4H2O
 Essential Elements: Calcium, Hydrogen, Lead, Manganese, Oxygen, Silicon, Sulfur
 All Elements in Formula: Calcium, Hydrogen, Lead, Manganese, Oxygen, Silicon, Sulfur
     
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
     
Fluorescent Mineral Properties

 Shortwave UV light: Moderately bright to weak red
 Mid wave UV light: Weak red
 Longwave UV light: Weak red
 Additional Information: Brief red-orange phosphorescence at shortwave; phosphoresces weakly at other wavelengths
     
 To find out more about this mineral at minDat's website, follow this link   Roeblingite

     
 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.503

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.74


The Picking Table References
 PT Issue and PageDescription / Comment
V. 58, No. 1 - Spring 2017, pg. 16Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 2, Richard C. Bostwick - Roeblingite
V. 52, No. 1 - Spring 2011, pg. 21Roeblingite - A Cautionary Tale
View IssueV. 45, No. 1 - Spring 2004, pg. 13The Art of Fluorescent Mineral Photography, With Special Attention to the Minerals of Franklin and Sterling Hill Photographing the More Popular Franklin and Sterling Hill Fluorescent Minerals - Roeblingite
View IssueV. 39, No. 2 - Fall 1998, pg. 13Roeblingite and the "Parker Shaft Minerals"
View IssueV. 33, No. 2 - Fall 1992, pg. 11The Check List of Franklin-Sterling Hill Fluorescent Minerals - Roeblingite (Fluorescent Info)
View IssueV. 33, No. 1 - Spring 1992, pg. 22The Lead Silicate Minerals of Franklin, New Jersey: an SEM Survey, Herb Yeates, Roeblingite
View IssueV. 28, No. 2 - Fall 1987, pg. 15Research Reports, Roeblingite
View IssueV. 28, No. 1 - Spring 1987, pg. 25Mineral Notes Research Reports, The Roeblingite Assemblage
View IssueV. 9, No. 1 - February 1968, pg. 16The Exclusive Minerals of Franklin/Ogdensburg, N.J. (as of January 1968) by Frank Z. Edwards - Roeblingite (Short Note)
View IssueV. 8, No. 1 - February 1967, pg. 7Roeblingite
     
Images

     
Roeblingite, clinohedrite, ganophyllite, willemite crystals and hancockite from Franklin, NJ
Roeblingite (porcelain white), clinohedrite (white), ganophyllite (gold), willemite crystals (gemmy green) and hancockite (reddish brown) from Franklin, NJ. 4 1/4" x 3 1/8" x 1 1/4". From the collection of, and photo by Robert A. Boymistruk.







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