PARIS (Reuters) - The main European stock markets were trading in narrow ranges early on Friday, following a number of corporate results and uncertainties about the global economic situation.

In Paris, the CAC 40 gained 0.05% to 7,542.73 points around 07:55 GMT, thanks to EssilorLuxottica. In London, the FTSE 100 gave up 0.16% and in Frankfurt, the Dax fell by 0.21%.

Initial results from S&P Global's monthly surveys of purchasing managers show that growth in private activity has accelerated in France and Germany, but disparities are widening between services and industry.

In the afternoon, investors will be looking for indicators on activity in the United States, while statistics published on Thursday have only served to reinforce fears of an imminent recession in the world's leading economy.

Economic concerns are weighing on oil and industrial metals prices. The European basic resources sector is currently down the most, at 2.63%.

ArcelorMittal is down 2.54% and Rio Tinto almost 4%.

In other listed company news, EssilorLuxottica climbed 5.18% after posting sales growth ahead of expectations.

"The remarkable inflection in year-on-year growth for a group that overweights US consumers and has limited exposure to China is eye-catching," commented Jefferies in a note.

Software publisher SAP gained 1.37%, with the announcement of better-than-expected first-quarter sales growth taking precedence over lowered annual forecasts.

In Milan, Salvatore Ferragammo fell by 6.85% after reporting lower quarterly sales due to a slowdown in the US market.

(Laetitia Volga, edited by Blandine Hénault)