Kainite

History

Activities related to discovery and approval of the group members

Structural context

Kainite
Crystal System monoclinicCrystal Class prismaticSpace Group C2/m
a19.6742—19.764 (19.7246)
b16.1824—16.256 (16.2264)
c9.4914—9.547 (9.5249)
alpha90
beta94.884—94.938 (94.915)
gamma90
volume3010.86—3055.91 (3037.3185)

Based on 4 measurements

Chemical context

Stoichiometric formulas

Kainite
mindat.org
  • March 13, 2023KMg(SO4)Cl·3H2OBorisov et al. (2022) propose the formula KMg(SO4)Cl⋅2.75H2O.
IMA
  • March 13, 2023KMg(SO4)Cl · 2.75H2O
mineralogy.rocks
  • Aug. 30, 2022KMg(S6+O4)Cl·3H2O

Elements recorded on EPMA

2
Cl
2
H
2
K
2
Mg
2
O
2
S

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • colourless
  • colourless
    • brownish
    • greyish-green
          Color noteOriginal color note from the source
          Colourless; yellow, brownish, greyish-green, red, violet, blue; colourless in transmitted light.
          StreakStreak entities, recognized using a custom trained NER model
            Streak noteOriginal streak note from the source
            White
            Lustre
            Vitreous
            Fracture
            Splintery
            Transparency
            Transparent
            Tenacity
            brittle
            Hardness
            2.5—3
            Calculated density
            2.24