Gina Rinehart's top-secret new book will launch today to sympathetic mining and business crowds in Brisbane and Sydney -- although no journalist has laid eyes on it and the book's publisher refuses to discuss it with Crikey.

The tome -- titled Northern Australia and Then Some -- Changes We Need to Make Our Country Rich -- is billed as a collection of political essays. Editor Eden Cox describes it as "a compendium of speeches, articles and images" that "offers the reader a comprehensive insight into her [Rinehart's] thoughts about national prosperity, and an intimate glimpse of the life and times of this prominent Australian, who has assumed the mantle of Western Australia's resources pioneer".