Margarite





 Location Found: Franklin and Ogdensburg
     
 
 Year Discovered: 1820
     
 Formula: CaAl2(Al2Si2O10)(OH)2
 Essential Elements: Aluminum, Calcium, Hydrogen, Oxygen, Silicon
 All Elements in Formula: Aluminum, Calcium, Hydrogen, Oxygen, Silicon
     
 IMA Status: Approved
     
Fluorescent Mineral Properties

 Shortwave UV light: Weak white, gray
 Mid wave UV light: Weak white, gray
 Longwave UV light: Weak white, gray
     
 To find out more about this mineral at minDat's website, follow this link   Margarite

     
 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.469

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.67


The Picking Table References
 PT Issue and PageDescription / Comment
V. 58, No. 1 - Spring 2017, pg. 12Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 2, Richard C. Bostwick - Margarite
View IssueV. 33, No. 2 - Fall 1992, pg. 11The Check List of Franklin-Sterling Hill Fluorescent Minerals - Margarite (Fluorescent Info)
View IssueV. 32, No. 1 - Spring 1991, pg. 9An Uncommon Margarite/Corundum Assemblage From Sterling Hill, New Jersey, Pete J. Dunn, Clifford Frondel, Margarite
View IssueV. 27 No. 2 - Fall 1986, pg. 6Minerals of the Franklin Quarry, Philip P. Betancourt, Margarite
View IssueV. 18, No. 2 - September 1977, pg. 15The Fluorescent Minerals of Franklin and Sterling Hill, NJ by Richard C. Bostwick - Margarite
     
Images

     
Margarite, calcite, corundum crystals, rutile and minor pyrite from the Sterling Hill Mine, Ogdensburg, NJMargarite, calcite, corundum crystals, rutile and minor pyrite from the Sterling Hill Mine, Ogdensburg, NJ under longwave UV Light
Margarite (blue-green plates), calcite (white), corundum crystals (purple), rutile (black) and minor pyrite (gold) from the Sterling Hill Mine, Ogdensburg, NJ. Field of view 2". From the collection of, and photo by Robert A. Boymistruk.
Margarite, calcite, corundum crystals, rutile and minor pyrite from the Sterling Hill Mine, Ogdensburg, NJ under longwave UV light. The margarite fluoresces weak gray-blue, corundum red, the calcite, rutile and pyrite are non-fluorescent. Field of view 2". From the collection of, and photo by Robert A. Boymistruk.


Margarite crystal sprays in franklin marble from the Franklin Quarry, Franklin, NJMargarite crystal sprays in franklin marble from the Franklin Quarry, Franklin, NJ under shortwave UV Light
Margarite crystal sprays (blue-green) in franklin marble from the Franklin Quarry, Franklin, NJ. Field of view 1". From the collection of, and photo by JVF.
Margarite crystal sprays in franklin marble from the Franklin Quarry, Franklin, NJ under shortwave UV light. The margarite fluoresces dull blue-white and the franklin marble is non-fluorescent. Field of view 1". From the collection of, and photo by JVF.







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