Business Income Tax. For tax years beginning on or after January 1, 2015. corporations â 5.25 percent of net income. trusts and estates â 3.75 percent of net income.
Previously this substance had been known as a rare mineral of tiny colorless crystals, discovered in 1987 and named after the Poudrette family that operated the source quarry at Mont Saint-Hilaire, Quebec. GRANDIDIERITE is a bluish green mineral found primarily in Madagascar.
Gadolin tested the properties of yttria (yttrium oxide) in detail and found it did not melt even at the highest temperatures of the blowpipe; it also formed a clear colorless glass with borax. (3a) (These were to be typical properties of all the rare earth metal oxides.) Yttrium was the first rare earth element to be discovered. We now know Gadolinâs yttria was impure; in addition to yttrium oxide, it contained eight other rare earth metal oxides. These were discovered separately in later years; these metals were: erbium, terbium, ytterbium, scandium, thulium, holmium dysprosium, and lutetium.