R
Raite
Ralstonite
Rammelsbergite
Ramsbeckite ?
Ramsdellite
Rankachite
Raspite
Rathite
Realgar
Red beryl
Reichenbachite
Rhabdophane group
Rhodochrosite
Rhodonite
Rhönite
Richelsdorfite
Riebeckite (Amphibole Supergroup)
Ripidolite
Robertsite
Rockbridgeite
Roedderite
Romanèchite
Rosasite
Roscherite
Roselite
Rubellane
Rubellite (Tourmaline Group)
Ruizite
Rutile