Rhodolite crystal structure
cubic Nesosilicates

Rhodolite

(Mg,Fe)3Al2(SiO4)3

Quick Facts

Hardness
7.0
Specific Gravity
3.84
Refractive Index
1.76
Optical Character
Isotropic

Crystal Structure

#! Species: Rhodolite (Pyrope-Almandine Garnet) #! System: Cubic (m3m) #! Habit: Dodecahedron-trapezohedron combination cubic[m3m]:{110}@1.0 + {211}@0.7
cubic
m3m
{110} {211}

Physical Properties

Crystal Systemcubic
Hardness (Mohs)7.0
Specific Gravity3.84
CleavageNone
FractureConchoidal to uneven
LustreVitreous

Optical Properties

Refractive Index1.76
Optical CharacterIsotropic
Dispersion0.027
PleochroismNone (isotropic)

Colours

Purplish-redRaspberryRose-pinkPinkish-redViolet-red

Localities

TanzaniaSri LankaZimbabweBrazilMadagascarIndiaKenyaMozambique

Common Inclusions

Rutile needlesApatite crystalsZircon crystals with halosFingerprintsGrowth tubes

Known Treatments

Generally not treated

Crystal Forms

dodecahedrontrapezohedron

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#! Species: Rhodolite (Pyrope-Almandine Garnet) #! System: Cubic (m3m) #! Habit: Dodecahedron-trapezohedron combination cubic[m3m]:{110}@1.0 + {211}@0.7