LONDON, March 27 (Reuters) - Private equity fund Seacrest Capital is in talks to sell part or all of its British North Sea-focused oil exploration firm Azinor Catalyst, which could fetch between $60-$100 million, having received unsolicited offers for it, banking and industry sources said. Azinor does not currently produce any oil or gas but has prospective resources of around 600 million barrels of oil equivalent (boe), according to sales documents seen by Reuters. In 2014, it discovered the...