a mineral is always this because it has a definite volume and shape
minerals that can be stretched, hammered, or molded without breaking
a gemstone that is cut and polished
the most common source of quartz used in making glass
the powder form of a mineral left behind when rubbed on a streak plate
occurs in nature in a pure form, gold is an example
the process by which atoms are arranged to from a material with a crystal shape
talcum powder is made from this soft mineral
located below earth's surface, cools and hardens to forms mineral crystals
when two elements combine, most minerals are these
rocks that contain a useful mineral that can be mines and sold at a profit
how light is reflected from a minerals surface
a mineral formed by evaporation
a type of mine that has a network of tunnels that extend deep into the ground, following the veins of ore
open pit mining
in this process miners must use earth moving equipment to dig a huge hole
the hardest known mineral
the repeating pattern of a mineral's particles forms a solid called
the process that removed the metal from the ore
a hard, colorful mineral that has a brilliant or glassy luster
a narrow channel or slab of a mineral that is different from the surrounding rock
does not come from the remains of plants or animals
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