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3NaAlSi3O8.NaCl
Tetragonal
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.
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| Copyright © 1995 by Pete J. Dunn |
Website
by Herb Yeates
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Link
to homepage
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This
page created: January 11, 2001 |
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