- 1. A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock. Source: opted
- 2. A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock. Source: webster
Home / Dictionary / alum shale
alum shale
Thesaurus links
Related headwords in VividLex — dictionary ↔ thesaurus bridge for exploration and SEO depth.
From the definitions
Word family
Nearby in the alphabet
Open full thesaurus page for alum shale · Language as a Lens