Marialite

Scapolite group, marialite-meionite series.
Formula Marialite: Na₄[Cl|(AlSi₃O₈)₃]
Mineral class: silicates
Crystal system: tetragonal
Mohs scale: 5.5 - 6
Density (g/cm³): 2.50 - 2.62
Refractive index: 1.53 - 1.55
Cleavage: distinct
Colors: colorless, white, grey, yellow, orange, rose, blue, violet, brown
Transparency: transparent - opaque
Glanz: vitreous -pearly - resinous
Fluorescence: LW and SW UV: yellow, orange, red
Pleochroism: -
Largest crystal: 1.5 m?
Deposits: worldwide
Discovery: 1866
1st Description: 1866 (vom Rath)
Name: in honor of Maria Rosa vom Rath, wife of the German mineralogist Gerhard vom Rath (1830-1888)

Marialite Mineral

Size: 1.7 x 0.7 x 0.6 cm

Origin: Badakhshan / Afghanistan

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Marialite Mineral

Size: 1.5 x 0.5 x 0.5 cm

Origin: Mpwampwa Distr. / Dodoma Reg. / Tanzania

Photo by kind permission of © António Manuel Ináçio Martins

Marialite

Weight: 1.30 ct

Origin: Santa Maria do Jetiba / Espirito Santo / Brazil

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Marialite Mineral

Size: 1.9 x 0.8 x 0.6 cm

Origin: Santa Maria do Jetiba / Espirito Santo / Brazil

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Marialite

Weight: 1.72 ct

Origin: Linópolis / Minas Gerais / Brazil

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Marialite Mineral

Height: ~ 3 cm

Origin: Morogoro marble occurrence / Uluguru Mts. / Morogoro Reg. / Tanzania

Photo by kind permission of © Peter Cristofono

Marialite Mineral

Size: 2.5 x 2.8 x 2.0 cm

Origin: Gooderham / Haliburton County / Ontario / Canada

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Marialite Mineral / SW UV

Size: 1.9 x 0.8 x 0.6 cm

Origin: Santa Maria do Jetiba / Espirito Santo / Brazil

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Marialite Cat's Eye

Weight: 5.55 ct

Origin: Minas Gerais / Brazil

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