from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A soft mica having a green hue and a high iron content.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A blueish-green form of mica.
from The Century Dictionary and Cyclopedia
- n. A green earthy silicate of iron, magnesium, and potassium, first described from cavities in amygdaloid near Verona: hence called green earth of Verona.
An opaque calcite of a grass-green colour, occurring as large cleavage masses in central India and known as hislopite, owes its colour to enclosed "green-earth" (glauconite and celadonite).
I could have called out and initiated a deep argument about crushed malachite (which is so expensive) as against green earth celadonite (which fades), but who wants to start libelling "Appian green 'with a painter who is known to thump people?