UPDATE 1-India's Sept iron ore exports rise 88 pct y/y

* Pick up in Chinese demand boosts sales

* Annual rise also reflects slump in same month last year

* Exports from Goa seen higher in October - official (Adds detail)

MUMBAI, Nov 6 (Reuters) - Indian iron ore exports jumped an annual 88 percent in September as Chinese demand picked up, and partly reflected a statistical effect caused by a slump in the same month last year in the wake of the world economic crisis.

Exports climbed to 6.25 million tonnes in September from 3.33 million tonnes a year earlier, the Federation of Indian Mineral Industries (FIMI) said on Friday.

"There seems to be some additional demand for Indian ore from China," Glen Kalvampara, secretary, Goa Mineral Ore Exporters' Association, said.

Goa on the west coast of India contributes more than 40 percent of India's total iron ore exports of about 106 million tonnes a year.

Exports in September last year had fallen an annual 39.5 percent from 5.5 million tonnes in the same month in 2007.

Kalvampara said exports from Goa in October were also good.

"It appears there will be a marginal increase in exports from Goa," he said.

Exports during April to September were 45.03 million tonnes, up from 39.8 million tonnes in the same period a year ago, FIMI said, adding the figures were provisional.

For a factbox on India's iron ore industry, click [ID:nBOM494335] (Reporting by Ruchira Singh; Editing by Ranjit Gangadharan)