Answer;
It indicates that it is a metallic luster
Step-by-step explanation;
-The physical properties of minerals comprise various measurable and discernible attributes, including color, streak, magnetic properties, hardness, crystal growth form, and crystal cleavage. Each of these properties are mineral-specific, and they are fundamentally related to a particular mineral’s chemical make-up and atomic structure.
-Mineral crystals form in many different shapes and sizes. A mineral is made up of atoms and molecules. As the atoms and molecules combine, they form a particular pattern.