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1. mineralogy-the branch of geology that studies minerals: their structure and properties and the ways of distinguishing them. geology-a science that deals with the history of the earth as recorded in rocks.geode - (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals.ineralogy-the branch of geology that studies minerals: their structure and properties and the ways of distinguishing them. geology-a science that deals with the history of the earth as recorded in rocks. geode - (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals.
mineral. n. 1. (Minerals) any of a class of naturally occurring solid inorganic substances with a characteristic crystalline form and a homogeneous chemical composition. 2. any inorganic matter.3. (Mining & Quarrying) any substance obtained by mining, esp a metal ore.ineral. n. 1. (Minerals) any of a class of naturally occurring solid inorganic substances with a characteristic crystalline form and a homogeneous chemical composition. 2. any inorganic matter.