Search from vocabulary

Content language

Concept information

There is no term for this concept in this language.

Preferred term

chalcedony (en)  

Definition

  • A very fine-grained (cryptocrystalline) variety of the silica mineral quartz. A form of chert, it occurs in concretionary, mammillated, or stalactitic forms of waxy lustre and has a compact fibrous structure, a fine splintery fracture.

Broader concept

Source

  • https://www.britannica.com/topic/chalcedony

Editorial note

  • 5.4

In other languages

URI

https://vocabs.acdh.oeaw.ac.at/defcthesaurus/chalcedony/3.13

Download this concept: