Rocks and Minerals

Types of Rocks Diagram


Sedimentary Rocks


TYPE OF SEDIMENTARY ROCK PARTICLES OF WHICH ROCK IS COMPOSED
Conglomerate Sand, pebbles (similar to concrete)
Sandstone Sand
Shale (or Mudstone) Silt or Mud
Limestone Crushed shells or Coral

Igneous Rocks


Metamorphic Rocks

NAME OF ORIGINAL ROCK TYPE OF ORIGINAL ROCK METAMORPHIC ROCK
Shale Sedimentary Slate
Sandstone Sedimentary Quartzite
Limestone Sedimentary Marble
Granite Igneous Gneiss

Identifying Minerals

Colour

Lustre

Streak

Cleavage and Fracture

Hardness


Moh's Scale of Hardness

Moh's Scale of Hardness is a scale of 10 minerals from very soft talc to very hard diamond:

1. Talc 6. Feldspar
2. Gypsum 7. Quartz
3. Calcite 8. Topaz
4. Fluorite 9. Corundum
5. Apatite 10. Diamond