Errupting volcano
Igneous rocks from during the cooling and solidification of melted rocks or magma/lava. Rocks melt at high temperatures and they cool to form a new rock through volcanic erruptions or as they gradually dissipate heat in the subsurface.
Beach and layered rock clif next to beach
Sedimentary rocks are formed by recycling other rocks. This recycling process consists of weathering and erosion, transportation of weathering products, burial, and finally compaction under increasily elevated pressure and temperate to form a new recycled rock.
Mountains and deep valley
Metamorphic rocks are formed by changing the chemical composition of any rock by increasing its ambient pressure and temperature in such a way that the rock does not fully melt. To do this, a rock must be burried deep underground by geologic processes like mountain building.
Mining operation
There are only three rock types... but lets talk about rocks you can make money from! A rock is composed of many minerals. A mineral is composed of chemical elements in a stable state. Some of these elements are valuable to us, such as copper, gold, or iron. If a mineral has these valuable elements we say it is economic, and if the concentration of economic minerals is sufficent in one location, we may mine it.

Chris' Rock Collection

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Look to the right to see where I got some.

Field technician hiking over some boulders Tents setup at remote camp Grass covered valley View during field work Zion rock and gem store sign View of river valley
Bornite mineral

Name: Bornite
Type: Ore Mineral
Commodity: Copper
Collected: Utah

Malachite mineral

Name: Malachite
Type: Ore Mineral
Commodity: Copper
Collected: Newfoundland

Granite gold bearing rock

Name: Granite (Gold-Bearing)
Type: Igneous
Minerals: Galena, Chalcopyrite
Collected: Southwest Newfoundland

Semi-massive sulphide bearing gold

Name: Semi-Massive Sulphide (Gold-Bearing)
Type: Ore Mineral
Minerals: Pyrite, Chalcopyrite, Galena, Bornite
Collected: Southwest Newfoundland

Obsidian igenous rock

Name: Obsidian
Type: Igneous
Minerals: Silicates
Collected: Utah

Apatite minearl

Name: Apatite
Type: Ore Mineral
Commodity: Phosphorus
Collected: Utah

Labradorite mineral

Name: Labradorite
Type: Igneous/Metamorphic
Minerals: Plagioclase Feldspar, Micas
Collected: Labrador

Peroditite rock

Name: Peroditite
Type: Igneous (Ocean Floor Rocks!)
Minerals: Olivene, Pyroxene, Plagioclase Feldspar
Collected: Western Newfoundland

Massive sulphide ore, drilled and sampled

Name: Massive Sulphide Ore (Drilled)
Type: Igneous
Commodities: Gold, Silver, Copper, Lead, Zinc
Collected: Buchans, Newfoundland

Petrified wood

Name: Petrified Wood
Type: Sedimentary
Minerals: Silicates
Collected: Newfoundland

Fuchsite mineral

Name: Fuchsite
Type: Ore Mineral
Commodity: Chromium
Collected: Scandinavia

Native Bismuth

Name: Bismuth (Native)
Type: Ore Mineral
Commodity: Bismuth
Collected: Utah