idiomorphism

A crystal exhibits idiomorphism with its distinct geometric shape.

Definition

1. Noun:
   • Crystallography: "idiomorphism" refers to the property of a crystal that has developed its own characteristic external shape, bounded by naturally formed crystal faces, without being influenced by the surrounding matrix.
   • General: The state or quality of having a distinct, self-formed shape or form.

Usage Examples

• Noun:
  • The idiomorphism of the quartz crystals was evident in their perfectly formed hexagonal prisms. (The crystals had developed their own natural, characteristic shape.)
  • In petrology, idiomorphism is often observed in minerals that crystallize early from a magma. (The early-formed minerals show their own distinct crystal faces.)

Advanced Usage

• "idiomorphic" (adj): having idiomorphism; describing a crystal that displays its own characteristic form.

  • The idiomorphic garnet crystals were easily identified under the microscope. (The garnets had well-developed, self-formed faces.)

• "xenomorphism" (antonym): the property of a crystal that has been forced to take the shape of the surrounding minerals, lacking its own characteristic form.

  • Unlike idiomorphism, xenomorphism occurs when crystals grow in a confined space. (Xenomorphism is the opposite property.)

Variants and Related Words

• Idiomorphic (adj): possessing idiomorphism; having a self-formed crystal shape.

  • The idiomorphic pyrite crystals were cubic in form. (The pyrite showed its natural cubic shape.)

• Idiomorph (n): a crystal or mineral that exhibits idiomorphism.

  • The thin section contained several idiomorphs of feldspar. (The rock sample had self-shaped feldspar crystals.)

Synonyms

• Self-shaped: having a form determined by its own internal structure.
• Euhedral: a synonym in mineralogy for idiomorphic, describing well-formed crystal faces.

Related Idioms