Archerite

History

Activities related to discovery and approval of the group members

Structural context

Archerite
Crystal System tetragonalCrystal Class tetragonal scalenohedralSpace Group I-42d
a7.4264—10.53 (8.9806)
b7.4264—10.48 (8.9506)
c6.9—7.0454 (6.9394)
alpha90
beta90
gamma90
volume382.254—758.539 (572.7068)

Based on 12 measurements

Chemical context

Stoichiometric formulas

Archerite
mindat.org
  • March 13, 2023(K,NH4)(H2PO4)
IMA
  • March 13, 2023H2K(PO4)
mineralogy.rocks
  • Aug. 30, 2022(K,NH4)H2PO4

Elements recorded on EPMA

12
H
12
K
12
O
12
P
1
N

Physical properties

ColorColor entities, recognized using a custom trained NER model
    Color noteOriginal color note from the source
    White
    StreakStreak entities, recognized using a custom trained NER model
      Streak noteOriginal streak note from the source
      White
      Lustre
      Sub-Vitreous
      Waxy
      Greasy
      Fracture
      Irregular/Uneven
      Transparency
      Translucent
      Tenacity
      brittle
      Hardness
      1—2
      Calculated density
      2.23