22 ZIRCON FAMILY, the vicinity of Trziblitz and Podsedlitz in Bohemia, it occurs in a clayey alluvial deposite, near rocks of the newest trap formation, along with pyrope, sapphire, and iron; also, in very small grains, in auriferous sand, in Si lesia ; and in the trap rocks around Lisbon, and in those of Spain. It was first found in its original repository at Fried- rickschwarn, in the district of Christiania in Norway, where it occurs in considerable abundance in transition sienite. Faujas St Fond found it imbedded in basalt near Eirpailly: Cordier in a similar rock in the moun tain of Anise, also in Auvergne; and Weiss found it im bedded in a volcanic scoria in the same country. In the year 1812, I found it imbedded in a rolled mass of sie nite in the shire of Galloway. Asia. In the island of Ceylon, where this mineral was fiist found, it occurs in the sand of rivers, along with spinel, sapphire, tourmaline, and iron-sand. It has been observed in a similar situation in the district of Ellore in Hindostan : and it is mentioned by Reuss as a production of Asiatic Russia. America. A Spanish mineralogist, M. Ilenri Amana presented Hauy with some small crystals of zircon, which had been collected in the province of Antioquia, in the kingdom of Santa Fe de Bogota: it is mentioned as a mineral of Brazil; and Mr Solomon W Conrad found it imbedded in a primitive rock, composed of felspar and quartz, near Trenton in New Jersey, in the United States *. Africa.—It is said to occur in Teneriffe. Uses. * Bruce’s Mincralogical Journal,