AUD/USD briefly falters under psych barrier 0.7700, touches 0.7698

Trades on heavy tone as Asia stocks sink deeper into red; SSEC -1.2%

Breach of 21 DMA support could trigger more AUD selling

Tues close below 0.7676 would be more negative chart signal

Entry into Bollinger downtrend channel alters medium-term view

Australia financial markets closed Tuesday nL8N2K06DH

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