What Is the Distinction Between a Type and an Instance

question 39

Essay

What is the distinction between a type and an instance of that type?

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Definitions:

Igneous Pegmatite

A coarse-grained igneous rock composed primarily of large crystals, often containing rare minerals.

Magma

The molten or semi-molten natural material from which all igneous rocks are derived, located beneath the Earth's surface.

Welded Texture

A texture found in volcanic rocks, formed when hot volcanic ash and debris fuse together under pressure.

Volcanic Breccia Texture

A coarse-grained volcanic rock composed of angular to subangular fragments bonded together by a fine-grained matrix, typically formed from explosive volcanic eruptions.