A light yellow, red-brown, or black mineral, SnO2 , that is an important tin ore.
A very hard and heavy, brown or black mineral, tin dioxide, SnO2, the chief ore of tin.
(mineralogy) A generally black mineral, composed of tin oxide, SnO2, which is an important ore of tin.
Other Word Forms
Origin of cassiterite
French cassitéritefrom Greek kassiterostin
American Heritage Dictionary of the English Language, 5th Edition
Cassiterite Sentence Examples
The tin occurs in the form of cassiterite, and is found chiefly in or near the crystalline rocks, especially the granite.
The granite, which is intruded through the Eocene beds, is associated with a pegmatite containing tourmaline and cassiterite.
Of minerals containing this element mention may be made of cassiterite or tinstone, Sn02, tin pyrites, Cu 4 SnS 4 + (Fe,Zn) 2 SnS 4; the metal also occurs in some epidotes, and in company with columbium, tantalum and other metals.
Zirconia can be obtained crystalline, in a form isomorphous with cassiterite and rutile, by fusing the amorphous modification with borax, and dissolving out with sulphuric acid.
It is an amorphous white powder; but it may also be obtained in crystals isomorphous with cassiterite by heating the amorphous form with borax to a very high temperature.