Descripción: la Microclina es un mineral polimorfo con los minerales de Orthoclasa y Sanidina. Estos tres minerales forman el grupo de feldespato potásico. Estos minerales son casi idénticos en sus propiedades físicas y, a veces, es imposible distinguir uno del otro sin análisis de rayos x. La única diferencia entre ellos es su estructura cristalina. La Microclina cristaliza en el sistema triclínico, mientras que la Orthoclasa y Sanidina cristalizan en sistema monoclínico. Los cristales de Microclina son generalmente mucho más grandes que los de los Orthoclasa. Un color verde profundo suele ser característico del mineral de Microclina.
Color: Blanco, crema u otros tonos.
Dureza: 6.
Raya: Blanco.
Sistema cristalino: Triclínico.
Fórmula Química: KAlSi3O8.
Transparencia: Translúcido a opaco.
Formaciones: la mayoría de las veces aparece como cristales bien formados, que pueden ser de tamaño enorme.
Yacimientos: La Microclina es un mineral muy común, por lo que existen yacimientos en numerosos lugares: Monte Malosa, Malawi; Erongo, Namibia; Catamarca, Argentina; Skardu, Pakistán; Pennsylvania y Connecticut en EEUU…
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