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16.06: Cuarzo - Policristalino

Última actualización

30 oct 2022
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- 16.5.8: Cuarzo Ahumado
- 16.6.1: Calcedonia

gemology
Gemology Project

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Microcristalino significa que los cristales no son reconocibles a simple vista o con un microscopio estándar.

Se dice que los minerales formados por cristales aún más pequeños son criptocristalinos de la palabra griega 'Kruptos' que significa ocultos y se clasifican como masivos en su hábito porque no tienen una estructura ordenada. La mayoría son semi-transparentes a opacos.

Con los microscopios modernos con alto poder de aumento, estos términos ya no parecen válidos y se les conoce como policristalinos.

Incluye piedras clasificadas como variedades de las especies de cuarzo:

calcedonia
cuarzo aventurina
ojo de halcón
prasiolita
cuarzo ojo de gato
cuarzo rosa
ojo de tigre

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