Roscoelite

Ros´coe`lite

(Min.) A green micaceous mineral occurring in minute scales. It is essentially a silicate of aluminia and potash containing vanadium.

roscoelite

[′rä‚skō‚īt] (mineralogy) K(V,Al,Mg)₃Si₃O₁₀(OH)₂ Tan, grayish-brown, or greenish-brown vanadium-bearing mica mineral occurring in minute scales or flakes.

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