* Gold falls to lowest since Jan 23 at $864.30/oz
* SPDR gold ETF sees outflow; iShares Silver hits record
* Indian jewellery demand picks up as prices fall
* ETF Securities files to register platinum trust with SEC (Recasts, updates prices, market activity; new byline, changes dateline, previously LONDON)
By Carole Vaporean
NEW YORK, April 6 (Reuters) - Gold fell sharply on Monday as some investors unwound safe-haven positions, others sold as the dollar strengthened and others unloaded gold along with other commodities including oil and base metals.
Slides beneath key technical levels around $880 and $870 per ounce accelerated the decline as investors liquidated some long positions and targeted key support levels around $850.
Spot gold <XAU=> was quoted at $868.65/870.25 an ounce by 3:53 p.m. EDT (1953 GMT), well off $892.50 in late New York trade on Friday.
The session low of $864.30 was last seen on Jan. 23.
Analysts said a myriad of factors contributed to gold's decline and prevented fund buyers from jumping in.
"No buyers as selling begat selling. Too much for sale all at once, with sell stops from early morning from funds not wanting to be buyers ahead of too much for sale," said George Gero, a vice president at RBC Captial Markets in New York.
An broad increase in the dollar weighed on gold. A stronger dollar tends to make dollar-priced bullion less attractive to overseas investors.
Stocks in Europe and New York fell on fading optimism about global economic recovery. [
] Investors doubtful of economic recovery also sold gold along with most other commodities.Still other selling came from investors optimistic about the economy. These investors unwound safe-haven positions in gold to make riskier investments.
"I think we're still seeing systemic selling. I think risk appetite is climbing. Even though equity markets are not up today, they were up overnight and a lot of the (gold) selling we're seeing started off in Asia overight," said James Steel, HSBC metals analyst and Senior vice president.
Other selling was a holdover from last week after the Group of 20 leaders meeting talked of large gold sales.
"With the G20, talk of gold sales and the optimism that came back into markets last week, there's been liquidation from various quarters," Mitsubishi analyst Tom Kendall said.
OUTFLOW
The world's largest gold-backed exchange-traded fund, New York's SPDR Gold Trust, said it recorded a small outflow on Friday. Buying by the funds has driven overall gold demand as the financial crisis fueled interest in physical assets.
But sliding gold prices have revived demand in India, where jewelry sales were picking up ahead of the key gold-buying Akshaya Tritya festival this month. [
]A unit of London's ETF Securities filed with the Securities and Exchange Commission to register platinum and palladium trusts in the United States for the first time, according to a notice on the SEC's website. [
]Analysts said they thought selling of platinum and palladium was muted by the SEC filing. They said they feared strong ETF demand for platinum and palladium could cut supply for industrial users.
Spot platinum <XPT=> eased to $1,140.00/1,150.00 an ounce from $1,154.50. And, spot palladium <XPD=> firmed to $221.0/226.0 an ounce from $218 previously.
Silver <XAG=> dipped to $12.11/12.19 an ounce from $12.71.
The world's largest silver-backed ETF, the iShares Silver Trust <SLV>, said its holdings rose 119.55 tonnes or 1.4 percent from the day before to a record 8,413.01 tonnes on April 3. [
] (Editing by David Gregorio)