Definition of ilvaite
: a silicate CaFe3Si2O8(OH) of iron and calcium and sometimes manganese related to epidote and occurring in black prismatic crystals and columnar masses (hardness 5.5–6, specific gravity 4.0)
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of ilvaite
German ilvait, from Ilva (Elba), Italian island in the Mediterranean + German -it -ite
Seen and Heard
What made you want to look up ilvaite? Please tell us where you read or heard it (including the quote, if possible).