Sales box with 35 Aegerien clusters from Mt Malosa, Zomba, Chilwa Alkaline Area, Malawi

The mineral aegirine is a sodium iron inosilicate with the chemical formula NaFe3+(Si2O6). It belongs to the pyroxenes. The green, reddish-brown or black aegirine has a yellow-grey stripe color, a vitreous luster, and the cleavage is evident according to unknown crystal planes. The average density is 3.52 and the hardness is 6 to 6.5. The crystal system is monoclinic and the mineral is not radioactive. The mineral aegirine is named after Aegir, the Teutonic god of the sea. Aegirine is a common pyroxene formed mainly in sodium rich nepheline syenites. The type locations are the Konsberg in Buskerud, Norway and the Magnet Cove, Hot Spring County, Arkansas, USA. The mineral is also found on Russia's Kola Peninsula, Quebec, Canada and Utah, and in South Africa and DM Congo.