Location Found: Franklin (Type Locality)
 Year Discovered: 1932
 Formula: CaMn2+Si2O6
 Essential Elements: Calcium, Manganese, Oxygen, Silicon
 All Elements in Formula: Calcium, Manganese, Oxygen, Silicon
 IMA Status: Approved
Fluorescent Mineral Properties

 Longwave UV light: Muted dull orange
 Additional Information: Moderately bright orange under blue light, peaking at 445 nm
 To find out more about this mineral at minDat's website, follow this link   Johannsenite

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.434

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.63

The Picking Table References
 PT Issue and PageDescription / Comment
V. 58, No. 1 - Spring 2017, pg. 11Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 2, Richard C. Bostwick - Johannsenite
View IssueV. 17, No. 2 - September 1976, pg. 8The Post Palache Minerals - Johannsenite
View IssueV. 9, No. 1 - February 1968, pg. 7Mineralogical Data - Johannsenite/Bustamite
View IssueV. 7, No. 1 - February 1966, pg. 8Johannsenite
View IssueV. 6, No. 1 - February 1965, pg. 9Johannsenite
View IssueV. 6, No. 1 - February 1965, pg. 10Bustamite and Johannsenite
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