Chromite-Hercynite Series

History

Activities related to discovery and approval of the group members

Structural context

Isometric System
116 measurement(s) or 100.00%5 member(s) or 100.00%
a8.0895—8.3765 (8.209)
b8.0895—8.3765 (8.209)
c8.0895—8.3765 (8.209)
alpha90
beta90
gamma90
volume529.377—587.743 (553.3543)

Based on 116 measurements
Aluminian Chromite
Chromite
Chromohercynite
Chrompicotite
Hercynite

Chemical context

Stoichiometric formulas

Chromite-Hercynite Series
mineralogy.rocks
  • Aug. 30, 2022Fe2+B2O4

Elements recorded on EPMA

114
Fe
114
O
107
Al
69
Mg
38
Cr
34
Ti
30
Mn
26
Ni
21
V
17
Zn
3
Si

Physical properties

ColorColor entities, recognized using a custom trained NER model
1
    1
      1
      • dark blue-green
      1
        Color noteOriginal color note from the source
        Black; Dark blue-green, yellow, brown
        StreakStreak entities, recognized using a custom trained NER model
        1
          1
          • dark greyish green
          Streak noteOriginal streak note from the source
          Brown; Dark greyish green to dark green
          Lustre
          • Vitreous1
          • Metallic1
          • Dull1
          • Sub-Metallic1
          • Resinous1
          • Greasy1
          Fracture
          • Irregular/Uneven1
          • Hackly1
          • Sub-Conchoidal1
          • Conchoidal1
          Transparency
          • Opaque1
          • Translucent2
          Tenacity
          • brittle2
          Hardness