marialite


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marialite

[mə′rē·ə‚līt]
(mineralogy)
3NaAlSi3O8·NaCl A scapolite mineral that is isomorphous with meronite.
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For a specific content of Si[O.sub.2], the [Na.sub.2]O is higher for the scapolite metagabbro than for the albite, which reflects that the Na: Si ratio in marialite is 2: 1, while the same ratio for albite is 1:1.
The rock contains aggregates optically resembling whitish scapolite or marialite, but dravite crystals potentially occurring together with marialite were not found in the material.
Analyses performed in the scapolites from this deposit (Table 1) show marialite contents very near to 50%, but slightly higher than meionite.
Scapolite (not specified as marialite or meionite) was reported from the Niessa-Isabela pegmatites (DSGM, 1974).