From Wikipedia, the free encyclopedia. Citrine /ËsÉªtriËn/ is a colour, the most common reference for which is certain coloured varieties of quartz which are a medium deep shade of golden yellow.Citrine has been summarized at various times as yellow, greenish-yellow, brownish yellow or orange.rom Wikipedia, the free encyclopedia. Citrine /ËsÉªtriËn/ is a colour, the most common reference for which is certain coloured varieties of quartz which are a medium deep shade of golden yellow.
indium oxide. thallium oxide. Aluminum Oxide is a chemical compound consisting of two aluminum ions and three oxygen ions demonstrated by the formula Al 2 O 3 Another commons name for aluminum oxide is aluminium oxide which is its proper name.It may also be referred to as aloxide, aloxite, or alundum.ndium oxide. thallium oxide. Aluminum Oxide is a chemical compound consisting of two aluminum ions and three oxygen ions demonstrated by the formula Al 2 O 3 Another commons name for aluminum oxide is aluminium oxide which is its proper name.
The surface of aluminum metal is covered with a thin layer of oxide that helps protect the metal from attack by air. So, normally, aluminum metal does not react with air. If the oxide layer is damaged, the aluminum metal is exposed to attack. Aluminum will burn in oxygen with a brilliant white flame to form the trioxide aluminum(III) oxide, Al2O3. Aluminum metal is obtained from the pure hot molten Al2O3 by an electrolytic method.