Constituent
Name
Hydroandradite-hydrogrossular
IMA name
Garnet group
Class
silicate mineral
Compound type
nesosilicate
Constituent abundance in material
Relevance
main - major
Arrangement
single phase
Mass fraction
1.0
Chemical composition
Formula
$Ca_3M_2(SiO_4)_{3-x}(OH)_{4x}$ where $M = Al, Fe^{3+}$
Chemical formula
Ca3M2(SiO4)3-x(OH)4x
Elemental formula
(Ca2+)3 (Fe3+)0-2 (Al3+)0-2 (Si)1-2 O12 (H)4-8
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
$Ca^{2+}$ Calcium cation element 3 1.0 constituent cation main
$Fe^{3+}$ Iron(III) cation element 0 - 2 1.0 constituent cation main
$Al^{3+}$ Aluminium(III) cation element 0 - 2 1.0 constituent cation main
$Si$ Silicon element 1 - 2 1.0 constituent element main
$O$ Oxygen element 12 1.0 constituent element main
$H$ Hydrogen element 4 - 8 1.0 constituent cation main

Strunz

Class
silicates (09)
Division
nesosilicate (09.A)
Family
without additional anions (09.AD)

Dana

Major class
silicates (VIII)
Class
nesosilicate insular SiO4 groups only (51)
Type
with cations in [6] and >[6] coordination (51.04)
Group
N/A (N/A)
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Refringence type
isotropic
Birefringence
no
Color
various
Diaphaneity
various
Luster
various