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Ekanita.
General
Categoría Silicato.
Fórmula química Ca2ThSi8O20 or (Ca,Fe,Pb)2(Th,U)Si8O20
Propiedades físicas
Color Green, yellow, dark red.
Transparencia Transparent to translucent
Sistema cristalino Tetragonal
Hábito cristalino Pyramidal crystals, granular to massive.
Propiedades ópticas Uniaxial (-) 2V = 10 - 15°
Radioactividad Radioactive, metamict
Otras características [1][2][3]




Ekanite is an uncommon mineral notable primarily as being among the very few gemstones that are naturally radioactive. Most ekanite is mined in Sri Lanka, although deposits also occur in Russia and North America. Clear and well-colored stones command the best prices, but such stones are rare; the mineral's radioactivity tends to degrade the crystal matrix over time in a process known as metamictization.

Ekanite was first described in 1955 by F. L. D. Ekanayake.[4]



Peso molecular = 856.87 gm
Calcio 9.35 % Ca 13.09 % CaO
Thorium 27.08 % Th 30.81 % ThO2
Sílice 26.22 % Si 56.10 % SiO2
Oxígeno 37.34 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDOS

References[]

External links[]


Accessories-dictionary: Diccionario[]



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Esta página tiene contenido de Wikipedia. El Artículo original es Ekanite. La lista de autores la puedes ver en Historial. El texto de Wikipedia esta disponible bajo Licencia Creative Commons Atribución/Compartir-Igual 3.0.
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