Blue Feldspar

Structural context

Lazulite
Crystal System monoclinicCrystal Class prismaticSpace Group P21/c

Chemical context

Stoichiometric formulas

Blue Feldspar
mindat.org
  • March 13, 2023(Mg,Fe2+)Al2(PO4)2(OH)2
Lazulite
mindat.org
  • March 13, 2023MgAl2(PO4)2(OH)2
IMA
  • March 13, 2023MgAl2(PO4)2(OH)2
mineralogy.rocks
  • Aug. 30, 2022(Mg,Fe2+)Al2(PO4)2(OH)2

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • sky-blue
  • bluish white
Color noteOriginal color note from the source
Blue, sky-blue, bluish white
StreakStreak entities, recognized using a custom trained NER model
    Streak noteOriginal streak note from the source
    White
    Lustre
    Vitreous
    Sub-Vitreous
    Resinous
    Greasy
    Fracture
    Irregular/Uneven
    Splintery
    Transparency
    Transparent
    Translucent
    Tenacity
    brittle
    Hardness
    5.5—6
    Measured density
    3.122—3.24
    Calculated density
    3.144