Sericite/Montmorillonite interstratified mineral, Montmorillonite/Sericite interstratified mineral
Dioctahedral random interstratified mineral of sericite with montmorillonite. The 1:1 regular type is rectorite.
Year of discovery: 1955 (Japan)
Locality list: 87 localities of Sericite/Montmorillonite interstratified mineral