Tourmaline (Var: Achroite), Elbaite, Quartz (Var: Smoky Quartz)

Tourmaline (Var: Achroite) : AD₃G₆(BO₃)₃[T₆O₁₈]Y₃Z, Elbaite : [Na][(Li,Al)₃][Al₆][(OH)₃|OH|(BO₃)₃|Si₆O₁₈], Quartz (Var: Smoky Quartz) : SiO₂

Locality: East Hampton, Middlesex Co., Connecticut, USA

4 mm nearly colorless elbaite (achroite) crystal in center, and multicolored elbaite on left, all on a smoky quartz crystal. From an unspecified locality in East Hampton (Swanson Mine?). Ex- Warren Johansson collection, field-collected ca. 1939-45. Photograph by Peter Cristofono.

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Tourmaline (Var: Achroite), Elbaite, Quartz (Var: Smoky Quartz)

Tourmaline (Var: Achroite) : AD3G6(BO3)3[T6O18]Y3Z, Elbaite : [Na][(Li,Al)3][Al6][(OH)3|OH|(BO3)3|Si6O18], Quartz (Var: Smoky Quartz) : SiO2

Tourmaline (Var: Achroite) : AD₃G₆(BO₃)₃[T₆O₁₈]Y₃Z, Elbaite : [Na][(Li,Al)₃][Al₆][(OH)₃|OH|(BO₃)₃|Si₆O₁₈], Quartz (Var: Smoky Quartz) : SiO₂