What is the definition of a mineral?

A mineral is a homogeneous, naturally occurring substance with a definable internal structure formed through geological processes.

Which of the following is NOT a ferrous mineral? 

A) Hematite 

B) Copper 

C) Magnetite 

D) Iron Ore

B) Copper

Riddle: I am found in rocks and soil, and my structures can be thin and sheet-like. What am I?

Mica

True or False: Minerals can only be found in solid form.

False. Minerals can also occur in liquid and gaseous forms before solidification.

The process of mineral formation in igneous rocks involves the cooling of ______.

Magma

What type of coal is characterized by high purity and hardness?

Anthracite

Which mineral is primarily used in the production of aluminum?

Bauxite

Riddle: I am a non-renewable resource, essential for generating electricity, and I come from ancient organic materials. What am I?

Coal

True or False: All minerals are economically viable to extract.

False. Only minerals with sufficient concentration in ores are commercially viable.

Which energy resource is derived from the decomposition of organic waste?

Biogas

Which mineral is known for its use in electrical wiring and plumbing?

Copper

Which of the following minerals is commonly found in placer deposits? 

A) Iron 

B) Coal 

C) Gold 

D) Bauxite

C) Gold

True or False: Recycling metals can help conserve mineral resources.

True. Recycling metals reduces the need for new mining and conserves mineral resources.