The perceived hue of a mineral sample represents a fundamental characteristic used in its identification. This attribute stems from the way a mineral absorbs, transmits, or reflects light. For instance, a mineral that absorbs all wavelengths of visible light except blue will exhibit a blue coloration to the observer.
Understanding this property is crucial for mineralogists and geologists as it provides a readily observable, albeit sometimes ambiguous, clue to a mineral’s chemical composition and crystal structure. Throughout history, this visual attribute has been a primary factor in the classification and appreciation of geological specimens, influencing both scientific study and aesthetic value.
