SAO PAULO, Aug 25 (Reuters) - Rio de Janeiro-based technology investment firm Mosaico Ventures has filed for a potential initial public offering, according to a preliminary prospectus released on Tuesday evening.

The primary portion of the offering is expected to raise roughly 340 million reais ($61.7 million), according to the prospectus. Reuters, citing sources, reported on Mosaico's plans earlier in the day.

($1 = 5.51 reais)

(Reporting by Aluísio Alves; Writing by Gram Slattery; Editing by Jacqueline Wong)

((gram.slattery@thomsonreuters.com; +55-11-95057-1453))

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