Definition, Meaning & Synonyms

conchoidal

adjective

/kɒŋˈkɔɪdəl/

Definition

Relating to a specific type of fracture in materials, particularly minerals, where the surface of the break resembles the curved shape of a mollusk shell.

Examples

Quartz often exhibits conchoidal fracture patterns, making it easier to shape into tools.
When you break a piece of obsidian, you’ll notice its conchoidal break is smooth and shiny.

Meaning

Conchoidal refers to the smooth, curved surface that can be observed when certain materials break. This type of fracture does not create sharp edges and is often indicative of materials with a glassy texture.