CONAKRY Aug 29 (Reuters) - A strike at AngloGold Ashanti's Siguiri gold mine in Guinea has halted operations there, mines ministry secretary-general Saadou Nimaga said on Wednesday.

The Société aurifère de Guinée, in which AngloGold holds an 85 percent stake, confirmed in a statement that a strike was underway and encouraged employees not wishing to participate in the strike to report to work. The strike began on Tuesday. (Reporting By Saliou Samb; Writing by Aaron Ross. Editing by Jane Merriman)