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is for Andesite

Andesite is a type of rock. This rock is usually grey or black in color. Andesite rock was named after the Andes Mountains.

is for Basalt

Basalt is a fine grained type of rock. It is an igneous rock, and composed with lots of minerals.

is for Coal

Coal is a type of sedimentary rock. This rock is a brownish-black color. It can be used to burn fuel to produce electricity.

is for Datolite

Datolite is a mineral that is good for finding energy. It is found within other rocks, and copper Deposits.

is for Enargite

Enargite is a blackish grey rock, with a violet tint. Enargite rocks are formed with crystals. These rocks are composed of a mineral called sulfosalt.

is for Foidolite

Foidolite rocks are made up of many grains and minerals. They are normally colored dark green, and blackish colors. Foidolite rocks are a rare type of igneous rock.

is for Granite

Granite rock is found through continental crust. This type of rock is mainly found near mountain ranges.

is for Hafnon

Hafnon rocks are reddish orange in color. These rocks are composed with crystals. Hafnon rocks are found in lots of weathered areas.

is for Ignimbrite

Ignimbrite rocks are known to be volcanic rocks. These rocks are typically a lighter shade of color, and has a unique texture.

is for Jet

Jet is considered the lowest type of coal. This actually makes jet more of a gemstone. These are not made up of minerals. The color ranges between black and brown and can be shiny.

is for Kimberlite

Kimberlite is a rock made with high pressured minerals. Kimberlite rocks are classified as igneous rocks. These rocks are mostly greyish in color.

is for Limestone

Limestone is a type of sedimentary rock. The main material in this rock is lime. It is usually white or grey in color. It is a very soft rock.

is for Marble

Marble is a metamorphic rock which is made from limestone and then a metamorphism. The texture is grainy and most of the time marble rocks have a pink and white color.

is for Nephrite

Nephrite is a mineral with a very soft texture. It is known for its design, and range of color. It can be very light such as yellow, and also dark such as brown.

is for Olivine

Olivine is a mineral that is high in magnesium. Olivine is usually a dark green color, but can be light green as well. This mineral is going to be found with other rocks that are high in temperature.