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Collection: Winchite

Formula: ◻{CaNa}{Mg4Al}(Si8O22)(OH)2
The winchite-group minerals are defined as sodium-calcium amphiboles with A(Na+K+ 2Ca)<0.5 apfu and with C(Al+Fe3++2Ti)<1.5 apfu. The W position may contain (OH),F or Cl.
Winchite is defined with
C2+ position: Mg dominant
C3+ position: Al dominant
W position: (OH) dominant.
Color: Cobalt-blue to violet-blue, lavender-gray, gray, colorless
Luster: Vitreous
Hardness: 5 - 6
Specific Gravity: 2.97 - 3.175
Crystal System: Monoclinic
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6 products
  • Winchite Specimen. 3g
    Winchite Specimen. 3g - The Crystal Connoisseurs
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    $75.00
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  • Winchite Specimen. 2.4g
    Winchite Specimen. 2.4g - The Crystal Connoisseurs
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    $46.75
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  • Winchite Specimen. 2.3g
    Winchite Specimen. 2.3g - The Crystal Connoisseurs
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    $51.25
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  • Winchite Specimen. 2.9g
    Winchite Specimen. 2.9g - The Crystal Connoisseurs
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    $51.25
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  • Winchite Specimen. 4g
    Winchite Specimen. 4g - The Crystal Connoisseurs
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    $58.25
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    $58.25
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  • Double Terminated Winchite Specimen. 4g
    Double Terminated Winchite Specimen. 4g - The Crystal Connoisseurs
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    $54.65
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    $54.65
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