Dufrenoysite and marumoite (IMA 1998-004) from high sulfidation-type epithermal Cu-Pb-Zn disseminated-massive sulfide deposits
of the Okoppe mine, Japan are reported based on their chemical compositions and powder XRD patterns. Marumoite from Okoppe
is the second occurrence.
Keywords Dufrenoysite – marumoite – jordanite – Okoppe mine – high sulfidation type – epithermal