Marialite, a sodium calcium aluminum silicate-chloride mineral of the scapolite group, is known from Franklin, but has not been reported from Sterling Hill. Marialite occurs in one known specimen as a light yellow 2-3 cm-thick vein of massive material, bordered by mica and graphite, and crosscutting massive calcite from the Franklin Marble. It is visually indistinguishable from common meionite, and its mottled yellow fluorescence in ultraviolet is not useful in species determination. The one known specimen has 62 mole % marialite. (Dunn, 1995)

 Location Found: Franklin
 Year Discovered: 1866
 Formula: Na4Al3Si9O24Cl
 Essential Elements: Aluminum, Chlorine, Oxygen, Silicon, Sodium
 All Elements in Formula: Aluminum, Chlorine, Oxygen, Silicon, Sodium
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Fluorescent Mineral Properties

 Shortwave UV light: Orange, moderate brightness
 Longwave UV light: Pink
 To find out more about this mineral at minDat's website, follow this link   Marialite

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.512

The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 58, No. 1 - Spring 2017, pg. 13Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 2, Richard C. Bostwick - Marialite
View IssueV. 33, No. 2 - Fall 1992, pg. 11The Check List of Franklin-Sterling Hill Fluorescent Minerals - Marialite (Fluorescent Info)
View IssueV. 31, No. 2 - Fall 1990, pg. 3Notes from the Laboratory & Changes to the List of Species From Franklin and Sterling Hill, Pete J. Dunn, John L. Baum, Marialite
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