Answer: Quartz, Feldspar
Explanation: Quartz is a common mineral that can have a wide range of physical properties depending on the sample. For example, quartz can have a variety of colors, including clear, white, pink, purple, and brown. The color of quartz is dependent on the presence of impurities, such as iron or titanium, and can vary greatly between samples of the same mineral.
Feldspar: Feldspar is another mineral that can exhibit a wide range of physical properties. For example, feldspar can have different crystal structures and appearances, such as being translucent or opaque, and can range in color from white to pink to gray. This variability is due to the presence of different elements in the mineral, such as aluminum or potassium, which can alter the physical properties of the mineral.
Minerals can have physical properties that vary considerably between samples of the same mineral due to the presence of impurities or differences in the crystal structure of the mineral. These variations can result in differences in color, appearance, and other physical properties, leading to variability in the properties of the mineral.