What Is Corundum? If It Is Not in the Rare

question 76

Short Answer

What is corundum? If it is not in the rare form described here, do we use it for anything?

---

Definitions:

Diatoms

Microscopic algae with silica shells, playing a crucial role in aquatic ecosystems as primary producers.

Foraminifera

A group of amoeboid protists, characterized by their intricate calcium carbonate shells, important in marine ecosystems and as indicators in the geological record.

Radiolaria

Microscopic planktonic marine organisms with intricate silica skeletons, important in paleoclimate studies.

Trypanosomes

Single-celled parasitic protozoans, known for causing diseases like sleeping sickness in humans and animals.