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General Uses of Coal
Coal has been used since prehistoric times, since it was easily accessible and had a relatively large energy output. As technology advanced, coal became even more important as the fuel of choice in many industries. In the modern world, it is used for a variety of purposes, from generating electric......
1032 
Oliver
Oil accumulation conditions, distribution and origin
Petroleum Accumulation: Conditions, Distribution and Origin
Petroleum is an essential resource in modern society, and has been the backbone of the global economy for centuries. Petroleum has its origins in prehistoric organisms that lived in the ocean depths and were buried in thick layers of se......
opposite sex stone
Unakite
Unakite is a popular semi-precious gemstone that is composed largely of pink feldspar, green epidote and quartz. This type of stone is found worldwide in places such as the United States, South Africa, Brazil, India, Norway and Australia.
Unakite is believed to be a powerful healing stone......
strontite
Pyrites
Pyrites, otherwise known as fool’s gold, is a sulfide mineral composed of iron and sulfur. It has a metallic luster and pale brass-yellow hue that gives it a resemblance to gold, hence it’s nickname. The name “Pyrites” is derived from the Greek word “pyrites lithos” which translates......
Germanium mineral
Gallium is a chemical element with the symbol Ga and atomic number 31. It is in group 13 of the periodic table, and thus has similarities to the other metals of the group, aluminium, indium, and thallium. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace am......
niobite
Bismuth calcium oxide, also known as bismuth calcium oxide, is an oxide of bismuth and calcium, commonly found in geological formations such as igneous rocks, sedimentary rocks and shale. Its chemical formula is Bi2O3.CaO. It has a hardness of 4.5 - 5.5 on the Mohs scale and is a yellowish gray mat......
Vanadium in rare refractory metal materials
Vanadium in Rare High Melting Point Metals
Vanadium, symbol V, has the atomic number 23 on the Periodic Table of Elements. It is a silvery-grey metal with a melting point of 1,926° Celsius (3,499° Fahrenheit).[1] Its majority use is in the production of steel alloys, but it is also present in o......
Rubidium extraction
A Brief History of Credit Cards
It is impossible to imagine modern life without credit cards. This method of payment has been so firmly integrated into daily economic activities that it is easy to forget that credit cards, as we know them, have only been around since the 1950s. In the years since......
Production of Zirconia
Preparation of Zirconia from Zircon
Zirconia is a unique form of ceramic material with a variety of properties and applications. It is made from zircon, which is a mineral form of the element zirconium, and it is naturally occurring in many places throughout the world. Zirconia is used for a wide ......
Extraction of germanium by volatilization in blast furnace of germanium-containing iron ore
Coking coal and iron ore are necessary ingredients in the production of steel. When heated in a blast furnace, the two materials form a slag – a material that acts as a fluxing agent. Together, the coal and iron ore create a molten form of iron which is released in its liquid state, ready to be s......
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