PRECIOUS-Gold hits 6-week high on China growth worry, commodities gain

Spot gold above 50-day MA first time since Aug. 15

* China's economic growth slows in Q3

* Sharp ETF outflow, Asian physical demand eyed (Adds comment, NEW YORK to dateline, second byline, updates market activities) By Frank Tang and Clara Denina

NEW YORK/LONDON, Oct 21 (Reuters) - Gold rose to a six-week high at above $1,250 an ounce on Tuesday, lifted by broad-based commodities gains and concerns over an economic slowdown in China.

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