Lamprophyllit

Structural context

Lamprophyllite
Crystal System monoclinicCrystal Class prismaticSpace Group C2/m

Chemical context

Stoichiometric formulas

Lamprophyllite
mindat.org
  • March 13, 2023(Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2
IMA
  • March 13, 2023(SrNa)Ti2Na3Ti(Si2O7)2O2(OH)2
mineralogy.rocks
  • Aug. 30, 2022(Na,Mn2+)3(Sr,Na)2(Ti4+,Fe3+)3(Si2O7)2O2(OH,O,F)2

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • dark brown
  • reddish brown
  • brownish yellow
  • straw-yellow
  • golden
Color noteOriginal color note from the source
Dark brown, brownish yellow, straw-yellow, reddish brown with a golden tint.
StreakStreak entities, recognized using a custom trained NER model
  • pale yellow
    Streak noteOriginal streak note from the source
    Pale yellow, may have an orange tint.
    Lustre
    Vitreous
    Pearly
    Fracture
    Irregular/Uneven
    Transparency
    Opaque
    Tenacity
    brittle
    Hardness
    2—3
    Measured density
    3.44—3.53
    Calculated density
    3.49