nAxinite(Min) A borosilicate of alumina, iron, and lime, commonly found in glassy, brown crystals with acute edges.
Century Dictionary and Cyclopedia
naxiniteA 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. It is a silicate of aluminium, iron, and manganese and calcium, with 5 per cent. of boron trioxid, and is commonly of a clove-brown or plum-blue color.
Webster's Revised Unabridged Dictionary
Named in allusion to the form of the crystals, fr. Gr. an ax
Brard (1788-1838) discovered that pyro-electricity was a property of axinite; and it was afterwards detected in other minerals.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2" by Various