Paleontology is the science of ancient life preserved as fossils—classified into micro/macro studies or zoo/botany branches—and aims to determine age, environment, climate, and the history of life evolution.
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THE REPETITION THEORY
Crystallography is fundamentally based on periodic atomic repetition governed by symmetry elements—translation, rotation, reflection, inversion, and their combinations—which determine crystal structures and their 1D, 2D, and 3D patterns.
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CRYSTALLOGRAPHIC SYMMETRY ELEMENTS
Crystallographic symmetry elements—zones and zone axes, center of symmetry (i), mirror planes (m), and rotation axes (n)—describe the geometric regularity of crystals and are fundamental for classifying crystal systems.
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CRYSTALLOGRAPHIC PROJECTION
Crystallographic projection converts a crystal’s 3D form into 2D representations—through spherical, gnomonic, orthographic, and especially stereographic projections—to analyze crystal face orientation and symmetry.
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