Sidwillite

Higher-hydrate counterpart of raydemarkite (monohydrate), tianhuixinite (1/3-hydrate), and molybdite (anhydrous).

History

Activities related to discovery and approval of the group members

Structural context

Sidwillite
Crystal System monoclinicSpace Group P21/c
a10.476—10.666 (10.5998)
b13.804—13.905 (13.852)
c10.462—10.606 (10.5212)
alpha90
beta91.59—91.85 (91.674)
gamma90
volume1529.66—1560.468 (1544.1284)

Based on 5 measurements

Chemical context

Stoichiometric formulas

Sidwillite
mindat.org
  • March 13, 2023MoO3·2H2O
IMA
  • March 13, 2023MoO3 · 2H2O
mineralogy.rocks
  • Aug. 30, 2022Mo6+O3·2H2O

Elements recorded on EPMA

3
H
3
Mo
3
O

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • canary-yellow
Color noteOriginal color note from the source
Canary-yellow
StreakStreak entities, recognized using a custom trained NER model
  • pale yellow
Streak noteOriginal streak note from the source
Pale yellow
Lustre
Resinous
Transparency
Translucent
Hardness
2.5
Calculated density
3.11