Ueno, Mitsuyoshi <br/><br/>
Investigation of the pyrophyllite and sericite deposits in the vicinity of Villa Unión, La Rioja State, Argentina 
Ueno, Mitsuyoshi ; Mastandrea, Otto O. 
 - Tokyo  Geological Survey of Japan 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PIROFILITA<br/>SERICITA
<br/><br/><label>Universal Decimal Class. No.: </label>622