Note 561 — Chapter XVII
Reading edition
A similar example, now in the Bergakademie of Berlin, has been described by Potonié (90) A.; see also a note on the German specimen by Seward (91).
Reading edition
A similar example, now in the Bergakademie of Berlin, has been described by Potonié (90) A.; see also a note on the German specimen by Seward (91).