Julienite

Sodium tetrathiocyanatocobaltate(II) octahydrate - a complex salt. Compare natrosulfatourea (that, however, lacks cobalt). A very rare lath-like blue mineral occurring as crusts permeating matrix. According to the state of art, julienite is the single mineral species containing the thiocyanate anion. Compare 'kafehydrocyanite'.

History

Activities related to discovery and approval of the group members

Structural context

Julienite
Crystal System monoclinicSpace Group P21/c
a18.941
b19.209
c5.46
alpha90
beta91.64
gamma90
volume1985.74

Based on 1 measurements

Chemical context

Stoichiometric formulas

Julienite
mindat.org
  • March 13, 2023Na2[Co(SCN)4]·8H2O
IMA
  • March 13, 2023Na2Co(SCN)4 · 8H2O
mineralogy.rocks
  • Aug. 30, 2022Na2Co2+(S2-CN3-)4·8H2O

Elements recorded on EPMA

1
C
1
Co
1
H
1
N
1
Na
1
O
1
S

Physical properties

ColorColor entities, recognized using a custom trained NER model
    Color noteOriginal color note from the source
    Blue
    StreakStreak entities, recognized using a custom trained NER model
      Streak noteOriginal streak note from the source
      Blue
      Lustre
      Sub-Vitreous
      Greasy
      Silky
      Transparency
      Transparent
      Translucent
      Tenacity
      brittle
      Calculated density
      1.61