Note 81 — Chapter V · THE OXIDES AND CARBONATES
Reading edition
The Spinels are an isomorphous family of cubic minerals of the general formula R´´O,R´´´₂O₃, where R´´ = Be, Fe, Mg, Ca, etc., and R´´´ = Fe, Al, Cr, etc.
Reading edition
The Spinels are an isomorphous family of cubic minerals of the general formula R´´O,R´´´₂O₃, where R´´ = Be, Fe, Mg, Ca, etc., and R´´´ = Fe, Al, Cr, etc.