Archive for the Zeolite Category

  • Thomsonite

    Refractive Index : 1.540 – 1.515 (+0.015 – 0.018)

    Optical Characteristic : DR, B+ , AGG

    Specific Gravity : 2.35 (+0.05 – 0.10)

    Formula : NaCa2AI5Si5O20.6(H2O)

    Crystal System : Orthorhombic

    Variety/Species : Thomsonite

    Species/Group : Zeolite Group

    Birefringence : 0.021

    Dispersion : N/A

    Hardness : 5 to 5.5

    Toughness : Fair

    Ultrasonic : Never

    Steam : Never

    UV Long : Inert to moderate

    UV Short : Inert

    Pleochroism : None

    Strength [...]

  • Yugawaralite

    Refractive Index : 1.504 – 1.495

    Optical Characteristic : DR, Biaxial negative

    Specific Gravity : 2.25 – 2.23

    Formula : CaAI2Si6O16.4(H2O)

    Crystal System : Monoclinic

    Variety/Species : Yugawaralite

    Species/Group : Zeolite Group

    Birefringence : 0.009

    Dispersion :

    Hardness : 4.5

    Toughness : Poor

    Ultrasonic : Never

    Steam : Never

    UV Long : Inert

    UV Short : Inert

    Pleochroism : None

    Strength : N/A

    Pleochroism Colors : None

    Heat : Sensitive

    Acids : Sensitive

    Light [...]