Strengite

Variscite-Strengite Series. The phosphate analogue of scorodite.

History

Activities related to discovery and approval of the group members

Structural context

Strengite
Crystal System orthorhombicSpace Group Pbca
a5.335—8.7296 (7.8742)
b9.808—9.897 (9.8633)
c8.72—10.128 (9.7692)
alpha90
beta90—90.54 (90.135)
gamma90
volume456.26—875.027 (768.0515)

Based on 4 measurements

Chemical context

Stoichiometric formulas

Strengite
mindat.org
  • March 13, 2023FePO4·2H2O
IMA
  • March 13, 2023Fe3+(PO4) · 2H2O
mineralogy.rocks
  • Aug. 30, 2022Fe3+PO4·2H2O

Elements recorded on EPMA

3
Fe
3
H
3
O
3
P

Physical properties

ColorColor entities, recognized using a custom trained NER model
      • pale pink
      • peach-blossom-red
      • carmine
      • colorless
      • colourless
      • greenish white
      Color noteOriginal color note from the source
      Purple, violet, pink, peach-blossom-red, carmine, greenish white, colorless; colourless to pale pink in transmitted light.
      StreakStreak entities, recognized using a custom trained NER model
        Streak noteOriginal streak note from the source
        White
        Lustre
        Vitreous
        Sub-Vitreous
        Greasy
        Transparency
        Transparent
        Translucent
        Tenacity
        brittle
        Hardness
        3.5—4
        Measured density
        2.84—2.87
        Calculated density
        2.84