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Streak - the color of a mineral in powdered form
the shapes and aggregates that a certain mineral is likely to form fibrous acicular platy Crystal Habit
the tendency of a mineral to break in particular directions due to zones of weakness in the crystal structure Fractures or irregular breakages occur when bond strengths in a crystal structure is equal in all directions. cleavage in 3 directions conchoidal fracture Cleavage
the ability of minerals to reflect light metallic non-metallic glassy earthy Luster
Some topics in Geology and how they are taught
Use of Illustrations and motion films
E.g. Plate Tectonics theory
- The unifying theory of geology
- All geological features and processes are
PANGAEA Gondwanaland Laurasia See how it works !
Evidence for Continental Drift Jigsaw puzzle fit Present-day continents South America Africa