Aeschynite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Aeschynite

Learn all there is to know about Aeschynite gemstones. Discover everything from color variety, care tips, and gemstone value and become an Aeschynite expert!

Colors

Black, Brownish Black, Brown, Brownish Yellow, Yellowish

  • Aeschynite classification

    CommonName
    Aeschynite
    Species
    Aeschynite
    Variety
    Colors
    Black, Brownish Black, Brown, Brownish Yellow, Yellowish
    AlternateNames
    Aeschinite, Blomstrandine, Blomstrandinite, Eschynite, Priorite,Syn., Priorite,Taiyite
    GemstoneGroups
    KeySeparations
    ClassificationComments
    Aeschynite is often radioactive. Found in pegmatite and placer deposits. Mineral specimens can be cleaned with dilute acid. Aeschynite is named after the Greek word for shame because early chemists were unable to distinguish the components that made up the crystal.
  • Aeschynite chemistry & crystallography

    ChemicalName
    yttrium calcium iron titanium niobium hydroxide
    ChemicalFormula
    (Y, Ca, Fe, Th) (Ti, Nb)2 (O, OH)6
    Synthesis
    CrystalSystem
    Orthorhombic
    ChemistryClassification
    Oxide
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Aeschynite optical properties

    Transparency
    Semitransparent - Opaque
    Dispersion
    Strength: strong fire
    OpticalComments
    RefractiveIndex
    Over the Limit 2.19-2.5
    Birefringence
    0.15-0.22
    OpticCharacter
    Biaxial
    OpticSign
    Positive
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV: Iner
    LWUV: Inert
    CCFReaction
    Pleochroism
    None
  • Aeschynite characteristic physical properties

    Hardness
    5-6
    CharacteristicComments
    Streak
    Reddish Yellow
    SpecificGravity
    4.85-5.19 Typical:4.95
    Toughness
    Poor
    Inclusions
    Luster
    Vitreous
    Stability
    Fracture
    Conchoidal
    Cleavage
    Poor