Fuchsite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Fuchsite

This sparkling green mica is a variety of muscovite colored by chromium; the same element that colors emerald and ruby. Micas, like muscovite and biotite, are a common additive in make-up because they are soft and add twinkle to eye shadow, foundation, lipstick, and other cosmetics.

Colors

Green

  • Fuchsite classification

    CommonName
    Fuchsite
    Species
    Muscovite
    Variety
    Fuchsite
    Colors
    Green
    AlternateNames
    Muscovite, Chrome-Mica,Chromian Muscovite
    GemstoneGroups
    Mica
    KeySeparations
    ClassificationComments
    Fuchsite is the chromium rich variety of muscovite.
  • Fuchsite chemistry & crystallography

    ChemicalName
    ChemicalFormula
    K(Al,Cr)2[(OH,F)2/AlSi3O10]
    Synthesis
    CrystalSystem
    Monoclinic
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Fuchsite optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    Strength: weak fire
    OpticalComments
    RefractiveIndex
    1.552-1.615
    Birefringence
    0.036
    OpticCharacter
    Biaxial
    OpticSign
    Negative
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV:
    LWUV:
    CCFReaction
    Pleochroism
    None
  • Fuchsite characteristic physical properties

    Hardness
    2-3
    CharacteristicComments
    Streak
    Light Green, White
    SpecificGravity
    2.8-2.9
    Toughness
    Inclusions
    Luster
    Vitreous
    Stability
    Fracture
    Cleavage
    Perfect, in one direction