Earnings weigh on European stocks, sterling lower before Brexit votes

LONDON (Reuters) - European shares edged lower on Tuesday as talk of progress in China-U.S. trade talks was offset by mixed corporate earnings, while sterling retreated ahead of another vote on Brexit.The broad European STOXX slipped 0.3%, and MSCI's world equity index, which tracks shares in 47 countries, was flat at 0.02% lower.French speciality minerals company Imerys slipped 6% after cutting its outlook for 2019, and Norway's Aker BP moved marginally lower as it slashed its full-year oil..