from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A borosilicate of aluminum, iron, and lime, commonly found in glassy, brown crystals with acute edges.
from the GNU version of the Collaborative International Dictionary of English
- n. A borosilicate of alumina, iron, and lime, commonly found in glassy, brown crystals with acute edges.
from The Century Dictionary and Cyclopedia
- n. A mineral occurring commonly in crystals, whose general form is that of a very oblique rhomb, so flattened that some of its edges become thin and sharp like the edge of an ax (whence its name), also sometimes found in lamellar masses.
Sorry, no etymologies found.
The hardness of 6½-7, combined with the colour and transparency, renders axinite applicable for use as a gemstone, the Dauphiné crystals being occasionally cut for this purpose.
In its occurrence in basic rather than in acid eruptive rocks, axinite differs from the boro-silicate tourmaline, which is usually found in granite.
Boric acid is also a constituent of certain silicates, such as tourmaline, axinite, and datholite.