Logvinova A M , Wirth R , Sobolev N V , Seryotkin Y V , Yefimova E S , Floss C , Taylor L A , American Mineralogist , 93 (2008) p.685-690, Eskolaite associated with diamond from the Udachnaya kimberlite pipe, Yakutia, Russia, Locality: natural diamond, Udachnaya pipe, Yukutia, Russia