IX. Aluminum (Al), Molybdenum (Mo), Mercury (Hg), Lead (Pb), and Zinc (Zn) Flashcards
It is a silver-white metal, very lightweight yet relatively strong and ductile that it can be drawn into wires or pressed into sheets or foil.
Aluminum
It is the most abundant metallic element and the third most abundant of all elements in the Earth’s crust, making up 8% of the crust by weight.
Aluminum
Main source of Al is Bauxite which is a mixture of:
• Gibbsite (Al(OH)3)
• Diaspore (AlO(OH))
• Boehmite (AlO(OH))
The major producer of aluminum ore is—
Australia
About ____ of all the bauxite mined worldwide is used
to produce alumina for refining into aluminum metal.
85%
Bauxite in the Philippines is commonly associated with—
karsted limestone and lateritic terranes
occurs chiefly as a secondary or accessory metal in porphyry copper and copper skarn deposits in the country
Molybdenum
molybdenum-rich deposits are found in the provinces of—
Larap, Polillo Island, and Southern Negros
molybdenum deficient deposits are found in—
Baguio and Cebu
The molybdenum-rich, gold-deficient deposit in southwestern Negros (Binulig, Sipalay, Aya-Aya) contains ____% Mo with ___ppm Au.
0.01%; 1 ppm
T or F. The central Cebu porphyry copper mineralization is characterized by relatively high contents of both molybdenum and gold.
True
a heavy, dense, silvery, metallic mineral with a specific gravity of 13.6 and an atomic number of 80
Mercury
Silver is also known by the popular name quicksilver, derived from the Greek words, _____ which means water, and _____ which means silver.
hydros; argyros
It is used for natural mercury found associated with the mineral cinnabar.
Native Mercury
Major world producers of mercury are—
Algeria, Kyrgyzstan, Spain and China
35% of the worldwide production of mercury is used in the manufacture of—
chlorine and caustic soda
30% of the mercury is useful in —
electronics and electrical applications
The remaining 35% of mercury usage is in scientific measuring instruments such as thermometers and barometers, and is combined with other metals and used for in fillings for teeth (called _____ by
dentists).
amalgams
The well-studied areas for mercury mineralization are found in Central Palawan. George H. Newman of Marsman and Co. first discovered mercury at ________ at Puerto Princesa in 1938.
Bo. Tagburos
In comparison to other mercury deposits identified in the provinces of —, the ore found in — appears to be the only one of economic significance.
Albay, Bataan, and Romblon; Central Palawan
Cinnabar (HgS), the chief mercury mineral, occurs in a wide variety of environment and lithologic units but most preferably in rocks that are ____, ____, and ______ to allow passage of ore solutions or vapors.
porous, fractured, and with sufficient permeability
These are next to copper, the most essential nonferrous metals in modern industry.
Lead (Pb) and Zinc (Zn)
In the Philippines, as in most areas in the world, lead and zinc are often by-products of ____ and ____ mining.
gold and copper
Lead and Zinc commonly occur with porphyry copper and/ or within ______ vein deposits, or as massive accumulations in ________ deposits.
mesothermal vein deposits; volcanogenic massive sulfide
