March 27 (Reuters) - Fertilizer manufacturer Mosaic

said on Wednesday that the production impact of a

brushfire at its Riverview phosphate fertilizer production

facility may last four to six weeks.

The Riverview facility in Hillsborough County, Florida, was

at the center of two separate brushfires earlier this week.

The facility, which has a run rate of roughly 30,000 tonnes

per week, sustained limited damage to ancillary operations and

was configured to produce products primarily for export to

Brazil at the time of the fire, the firm said.

Mosaic previously said the incident had occurred during

routine maintenance and it was assessing any impacts to the

site's operating schedule while investigating the cause.

(Reporting by Kabir Dweit in Bengaluru; Editing by Devika

Syamnath)