Mineral: | Espinela
| Fórmula química: | MgAl2O4 | Tamaño: | | Peso: | | Transparencia: | transparente - translúcido | Número de piezas: | | Origen: | La Mina de Pyan Pyit (Pein Pyit), al noreste de Mogok, estado de Shan, Birmania (Myanmar) | Fine spinel specimen to study the beginning of a cyclic spinel twin. You can see the octahedron shape and out of two crystal faces at one side a twin after the spinel law appears. If this would happen again two times you would get a perfect cyclic spinel twin. This crystal has fully intact faces and points with fine luster. Moreover you can see beside the spinel- law twinning a parallel twinning as well !
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