"Devinez le minéral" is the French localization of the "Mineral Quiz". This is a quiz which invites you to test your knowledge of minerals and geology. It may be used for testing and educational purposes for people well-informed about the nature. Game consists of 50 illustrated questions about different minerals. Each question has 4 possible answers. When you tap one of the answers, the default color of the pressed button is changed for a while to green (when it was the right answer) or to red (wrong answer). You have 3 attempts to give right answer. If you give it at the first attempt you will receive 3 points, at the second attempt - 2 points, at the third - 1 point. After 2 wrong answers the hint with chemical formula of the mineral will be shown to help you. Play the "Mineral Quiz" now to test and improve your knowledge of geology!