Dims: 2.7 x 1.5 x 1.2" (6.9 x 3.8 x 3.0 cm)
Wt: 1.7 oz. (48.7 g)
Zomba Malawi, South Africa
A few intergrown Aegirine crystals rise up from the crystalline orthoclase base of this specimen. Only one of the Aegirines is complete, so I will concentrate on it alone. The crystal has dimensions of 1.7 x 0.3 x 0.3" (4.3 x 0.8 x 0.8 cm) and is in very good condition, showing almost no damage. It is also not quite complete, as there is a small amount of material missing out of its base, but this is due to natural occurrences. It shows moderately good crystal form, with some areas containing well-defined edges and flat faces. Its luster is either vitreous or waxy, depending on what part of the surface is being studied. Its termination seems to have been interrupted through intergrowth with the host rock or some other material, as it is incomplete also. The orthoclase base on which it rests shows very good monoclinic prismatic form. The crystals have a dirty, creamy-white coloration and a bright pearly-to-vitreous luster. Close examination of the base will reveal what look like a few tiny zircon crystals that are growing among the orthoclases.