* Gold rises above $920/oz, tracks Wall St rally
* Silver hits 10-week low on economic concerns
* Gold-silver ratio above 70 (Recasts, updates with quotes, closing prices, market activity, adds LONDON to dateline)
By Frank Tang and Jan Harvey
NEW YORK/LONDON, July 13 (Reuters) - Gold futures rallied above $920 an ounce on Monday, as solid gains in the stock market sparked a technical rally in the metal, but further gains could be capped by a lack of inflation-hedge and risk aversion demand.
A closely watched gold-to-silver ratio has recently jumped as silver tumbled as lingering economic fears weighed heavily on the white metal's status as a key component in the electronics sector.
Gold has held above $900 an ounce but lost nearly $20 to reach a two-month low last week. The yellow metal was weighed down by deflation fears and broad-based commodities weakness stemming from U.S. regulatory pressure to limit speculation in energy and metals markets.
"The tendency for the last couple of weeks is that the gold market followed stocks. It is certainly a (gold) rally but the resistance has not been broken," said Leonard Kaplan, president of the Illinois-based Prospector Asset Management.
Wall Street rallied 2 percent on Monday on more optimistic outlook about the banking and financial sector, after the U.S. equities market has declined in the past four weeks.
U.S. August gold futures <GCQ9> settled up $10, or 1.1 percent, at $922.50 an ounce on the COMEX division of the New York Mercantile Exchange.
Spot gold <XAU=> was at $919.40 an ounce at 3:15 p.m. EDT (1915 GMT), against $912.15 an ounce late on Friday.
OUTLOOK VULNERABLE
Gold, which fell 2 percent last week as dollar strength and losses in other commodities pressured prices, was seen as vulnerable to further losses from here, with the $900 an ounce level of support keenly eyed.
"I don't expect prices to stabilize here," said Commerzbank analyst Eugen Weinberg. "We will see a stronger dollar, and we will see gold below $900, which will trigger further technical selling."
Inflows into gold-backed exchange-traded funds have eased dramatically since the first quarter.
Holdings of the largest, New York's SPDR Gold Trust <GLD>, were unchanged for a second consecutive session on Friday following decline last week. [
]Other precious metals also slipped, with silver tracking gold and base metals down to hit a fresh 10-week low of $12.44 an ounce. It was last at $12.81 an ounce against its late Friday New York quote of $12.65. The gold-silver ratio has risen to 73 from about 62 in early May.
Analysts said that a rising gold-silver ratio could foreshadow further losses in the precious metals complex, but others said that it was simply because of heavy profit-taking following the metal's sharp rally toward $16 an ounce in early June.
"The decline in the Comex net speculative long position has accompanied an increase in the gold/silver ratio," said UBS analyst John Reade in a note. "Further long liquidation on Comex could see this ratio back up towards 80."
Silver's 5 percent price fall last week has helped take its 14-day relative strength index -- a measure of how overbought or oversold a commodity is, with an RSI of 30 or less suggesting a metal's price fall has gone too far -- to under 15 on Monday.
Platinum <XPT=> was at $1,110.50 an ounce against $1,104.50, while palladium <XPD=> was at $233 against its previous finish of $232.