Swedenborgite | Article about swedenborgite by The Free Dictionary
NaBe4SbO7 A colorless to wine-yellow mineral composed of sodium beryllium antimony oxide.
References in periodicals archive
Examples include swedenborgite
(which contains the scarce combination of beryllium and antimony) and any mineral that includes tellurium, which on average is found in Earth's crust at concentrations of 5 parts per billion.