* FTSE 100 down 0.7 percent

* Energy stocks weighed by falling oil prices

* Miners dented by softer metals

By Simon Falush

LONDON, July 10 (Reuters) - More gloom on prospects for the global economy sparked by weak U.S. corporate results depressed commodity prices, knocking energy stocks and dragging Britain's top share index to a 10-week low by midday on Friday.

By 1028 GMT the FTSE 100 .FTSE was down 24.00 points at 4,134.66 after it closed 18.43 points higher on Thursday at 4,158.66. The index is on track for its lowest close since late April, down 2.4 percent this week, set for its fourth consecutive week in negative territory.

Energy stocks took the most points off the index as oil prices slid below $60 per barrel, on track for its largest weekly fall since January CLc1 as the demand outlook soured and on fears of new rules to curb futures speculation.

BP (BP.L: Quote, Profile, Research), Royal Dutch Shell (RDSa.L: Quote, Profile, Research), BG Group (BG.L: Quote, Profile, Research), Tullow Oil (TLW.L: Quote, Profile, Research) and Cairn Energy (CNE.L: Quote, Profile, Research) fell between 0.5 and 1.1 percent.

"The oil price has come off in the last few weeks and that has chilled the mood for commodities," said Lars Kreckel, equity strategist at Exane BNP Paribas.