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Rocks and Minerals

Across
The most abundant and well known mineral found at Earth's surface. When combined with a polymer resin it makes beautiful kitchen countertops.
A sedimentary rock composed of sand-sized grains of mineral, rock particles, or organic material. It also contains a cementing material that binds the sand grains together.
This rock is produced when molten lava from a volcano cools so rapidly there is minimal crystal growth. The result is a volcanic glass with a smooth uniform texture.
A fine grained rock that breaks into thin, splintery layers. Natural gas and oil are sometimes extracted from this rock.
A mineral golden brown to yellow in color in its natural state. The modern birthstone for November.
This mineral can be crushed into a white powder. As a powder it absorbs moisture quickly.
Down
A fine-grained rock, mostly gray in color, often used as roofing material.
The primary ore of aluminum. In fact, it is the world's chief source of aluminum.
A gray crystalline form of carbon which occurs as a mineral in some rocks and is used in pencils and as a solid lubricant.
A mineral most often reddish in color. The birthstone for January.
A rock consisting of rough textured volcanic glass. Used in construction and horticulture, it has also been used in personal care for thousands of years to remove calluses and rough skin.