Constituent
Name
(hydro)grossular
IMA name
Garnet group
Class
silicate mineral
Compound type
nesosilicate
Relevance
main - major
Arrangement
homogeneous in multi-phases
Mass fraction
0.03 $\pm$ 0.1
Abundance comments
Approximately half of the sample
Formula
$A_3B_2(SiO_4)_3 \ \ \ \ \ $ where $A = Ca, Mg,Fe^{2+},$ and/or $Mn \ \ \ $ and $B = Al, Cr,$ and/or $Fe^{3+}$
Chemical formula
A3B2(SiO4)3
Elemental formula
(Ca)0-3 (Fe2+)0-3 (Mg2+)0-3 (Mn2+)0-3 (Al)0-2 (Cr)0-2 (Fe3+)0-2 Si3 O12
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
$Ca$ Calcium element 0 - 3 constituent element main
$Fe^{2+}$ Iron(II) cation element 0 - 3 constituent element main
$Mg^{2+}$ Magnesium(II) cation element 0 - 3 constituent element main
$Mn^{2+}$ Manganese(II) cation element 0 - 3 constituent element main
$Al$ Aluminium element 0 - 2 constituent element main
$Cr$ Chromium element 0 - 2 constituent element main
$Fe^{3+}$ Iron(III) cation element 0 - 2 constituent element main
$Si$ Silicon element 3 constituent element main
$O$ Oxygen element 12 constituent element main

Strunz

Class
silicates (09)
Division
nesosilicate (09.A)
Family
Nesosilicates 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