cacholong Min.
(ˈkætʃəlɒŋ)
[‘Kaschtschilon = {oqq}beautiful stone{cqq} of Kalmucks and Tartars’ (Dana).]
A variety of the opal, opaque, bluish-white, porcelain-white, pale yellowish or reddish.
| 1791 Macie in Phil. Trans. LXXXI. 369 That variety of calcedony which is known to mineralogists by the name of Cacholong. 1868–80 Dana Min. 199 Cacholong..often adheres to the tongue, and contains a little alumina. |