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Turmalina Elbaíta

Fórmula Química

(Na,Ca)(Li,Mg,Al)(Al,Fe,Mn)6(BO3)3(Si6O18)(OH)4

Clase Química

Silicatos

Propiedades

La Elbaíta posee cuatro variedades: verde, rubelita (rosa), indicolita (azul) y acroíta (incoloro). Posee dureza 7,5, densidad 3,05 a 3,1 y brillo vítreo. Presenta estrías longitudinales y sección basal triangular.

Procedencia

Lavra da Pederneira, Sao José da Safira, MG.

Curiosidades

En Rio Grande do Norte, son encontradas las turmalinas Paraíba (en proceso de agotamiento), de colores fuertes, que varían en tonos de azul, como azul-neón y azul-turquesa y violeta, únicas en el mundo, siendo entalladas como gemas de altísimo valor.

Uso

Ha sido usada como gema desde el siglo XVI.

Fuente: MM Gerdau - Museu das Minas e do Metal -

ABC de la minería

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