A mineral that occurs in the earths crust that is not manmade or manufactured?

Answer 1

Minerals comprise all natural, inorganic substances and, by definition, are not "manmade." Furthermore, if something is not man-made one can assume it "occurs in the earths crust". You are essentially asking for the name of any mineral.

The nutritional minerals in the human body include calcium, phosphorus, sulfur, potassium, chlorine, sodium, magnesium, iron, fluorine, zinc, copper, manganese, iodine, cobalt, selenium, chromium, and molybdenum.

Any of the elements with atomic numbers between 1-Hydrogen and 92-Uranium (excluding 43-Technetium) occur naturally in the Earth's crust.

Elemental abundance in the Earth's crust:

Oxygen: 49.5%

Silicon: 25.7%

Aluminum: 7.5%

Iron: 4.7%

Calcium: 3.4%

86 Other Elements: 9.2%

Elemental abundance in the human body:

Oxygen: 65%

Carbon: 18%

Hydrogen: 10%

Nitrogen: 3%

20 Other Elements: 4%

Answer 2

An example of a mineral found in Earth's crust that is not manmade or manufactured is quartz. Quartz is a common mineral made up of silicon and oxygen that occurs naturally in various geological environments around the world. It is often used in jewelry and in various industrial applications.