noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An important variety of sodalite exhibiting tenebrescence. countable, uncountable

Etymology

From Hackman + -ite, named according to Finnish geologist Victor Hackman who first discovered the mineral in Kola peninsula.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.