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120 pages : colour illustrations Contents includes: Rocks, minerals and gems -- Rock-hunting -- Rock detective -- Mineral-hunting -- Mineral detective -- Silicate minerals Summary: From riverbeds to beaches, cliff faces to fields, unearth the Earth's most precious rocks, minerals and gems, wherever you are in the world. Learn how to read the landscape for clues and identify different rock types - from dazzling diamonds to grainy sandstone. Discover how the three main types of rock form and all the major mineral groups