| 1-3 |
Granite |
A common igneous rock that is used extensively in construction. |
| 4-6 |
Sandstone |
A sedimentary rock made up of sand-sized grains. |
| 7-8 |
Limestone |
A sedimentary rock that is often used as a building material. |
| 9-10 |
Shale |
A sedimentary rock that is composed of clay and other fine-grained minerals. |
| 11-12 |
Basalt |
A volcanic rock that is often used for decorative purposes. |
| 13-14 |
Marble |
A metamorphic rock that is prized for its beauty. |
| 15-16 |
Gneiss |
A metamorphic rock that is often used as a building material. |
| 17-18 |
Quartzite |
A metamorphic rock that is known for its hardness and durability. |
| 19 |
Slate |
A metamorphic rock that is commonly used for roofing and flooring. |
| 20 |
Tephrite |
An uncommon volcanic rock often used as an ornamental stone. |