16.9.1: Diópsido de cromo
- Page ID
- 90433
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|---|---|
| Composición química | CaMg (SiO 3) 2 silicato de magnesio alcio |
| Sistema de cristal | Monocínicos |
| Hábito | Prismáticos, guijarros desgastados por el agua |
| Escote | Distinto |
| Fractura | Concoidal |
| Dureza | 5 |
| Naturaleza óptica | Biaxial + |
| Índice de refracción | 1.67-1.70 |
| Birrefringencia | 0.025-0.030 |
| Dispersión | Bajo, 0.013 |
| Gravedad específica | 3.3 |
| Lustre | Vítreo |
| Pleocroísmo | Débil a moderado |
Figura\(\PageIndex{1}\): Diópsido de Cromado Facetado
Foto cortesía de Rick Martin
El diópsido de cromo es la variedad rica en cromo de diópsido. El cromo le da al cromo diópsido un color verde más brillante en comparación con el verde que se ve en el diópsido que es causado por el hierro.
Diagnósticos
Color
Verde brillante a verde esmeralda.
Inclusiones
Inclusiones fibrosas.
Espectroscopio
Líneas finas en el rojo a rojo profundo con bandas estrechas en el verde-azul/azul. No todas las líneas pueden ser observadas.
Fenómenos
Ojos de gato
Localidades
Sudáfrica - Kimberley minas de diamantes
Birmania
Pakistán
Siberia, Rusia
Referencias
- Gemas. Sus Fuentes, Descripciones e Identificación 4ta edición (1990) - R.Webster, B.W. Anderson
- Gemología 3ª edición (2005) - Peter Read