The occurrence of diamond in meteorites is described below.
The chief occurrences of metallic iron are as minute spiculae disseminated through basaltic rocks, as at Giant's Causeway and in the Auvergne, and, more particularly, in meteorites (q.v.).
The meteorites which appear annually on or about the 10th of August are popularly known as "the tears of St Lawrence."
It occurs in the uncombined condition and alloyed with iron in meteorites; as sulphide in millerite and nickel blende, as arsenide in niccolite and cloanthite, and frequently in combination with arsenic and antimony in the form of complex sulphides.
Liversidge, The Minerals of New South Wales (1888), and to him is due a valuable chemical study of the meteorites and gold nuggets.
Richter appears to have been the first to propound the idea that life came to this planet as cosmic dust or in meteorites thrown off from stars and planets.
Precht, Ber., 1886, 19, p. 2326), in some meteorites, in certain stars and nebulae, and also in the envelopes of the sun.
Soon afterwards he constructed a machine from which the liquefied gas could be drawn off through a valve for use as a cooling agent, and he showed its employment for this purpose'in connexion with some researches on meteorites; about the same time he also obtained oxygen in the solid state.
Of great scientific interest in this connexion is the discovery of small diamonds in certain meteorites, both stones and irons; for example, in the stone which fell at Novo-Urei in Penza, Russia, in 1886, in a stone found at Carcote in Chile, and in the iron found at Canon Diablo in Arizona.
This iron has very often beautiful Widmannstatten figures like those of iron meteorites, but it is obviously of telluric origin.'
The extraterrestrial bodies which happen to find a resting-place on the earth are studied under the name of meteorites (q.v.).