Constituent
- Name
- Goldichite
- IMA name
- Goldichite
- Class
- non-silicate mineral
- Compound type
- sulfate
- Relevance
- main - minor
- Arrangement
- in multi-phases
- Mass fraction
- 0.06 $\pm$ 0.1
- Formula
- $KFe^{3+}(SO_4)_2 \bullet 4(H_2O)$
- Chemical formula
- K(Fe3+)(SO4)2•4(H2O)
- Elemental formula
- (K+) (Fe3+) S2 O8 (O-)4 H8
- Isotope mixture type
- terrestrial abundance
- Oxides
-
Formula $K_{2}O$ $Fe_{2}O_{3}$ $H_{2}O$ $SO_{3}$ Mass fraction (%) 13.11 22.23 20.07 44.59
Strunz
- Class
- sulfates - chromates - molybdates - tungstates (07)
- Division
- sulfates (selenates, etc.) without additional anions, with H2O (07.C)
- Family
- with medium-sized and large cations (07.CC)
- Code
- 07.CC.40
Dana
- Major class
- sulfates, chromates, selenates (VI)
- Class
- hydrated acid and sulfates (29)
- Type
- where AB(XO4)2.x(H2O) (29.05)
- Group
- -Goldichite- group (29.05.02)
- Code
- 29.05.02.01
- Phase type
- crystalline
- Crystal system
- monoclinic
- Crystal class
- prismatic
- Crystal class symbol
- 2/m (C2h)
- Crystal spacegroup
- P2(1)/c
- Molar mass
- 359.13 $g/mol$
- Density
- 2.43 $g/cm^3$
- Refringence type
- biaxial
- Refringence sign
- positive
- Birefringence
- 0.0470
- Refraction index $n_{\alpha}$
- 1.582
- Refraction index $n_{\beta}$
- 1.602
- Refraction index $n_{\gamma}$
- 1.629
- Color
- light yellow green