Granite is a plutonic rock in which quartz makes up between 10 and 50 percent of the felsic components and alkali feldspar accounts for 65 to 90 percent of the total feldspar content. Applying this definition requires the mineral identification and quantification abilities of a competent geologist.t forms from the slow crystallization of magma below Earthâs surface. Granite is composed mainly of quartz and feldspar with minor amounts of mica, amphiboles and other minerals. This mineral composition usually gives granite a red, pink, gray or white color with dark mineral grains visible throughout the rock.
The current US Census Bureau world population estimate in 2016 shows that there are approximately 7,346,235,000 people on earth as of August 23, 2016, which far exceeds the population of 7.2 billion from 2015.
Quick Answer. As of September 2014, there are 7.25 billion people in the world. The population of the world is currently growing at a rate of 1.4 percent per year, which translates to an estimated 80 million people a year. The most populous country in the world is China, with a population at 1.39 billion people. India is a close second at 1.26 billion people. Worldwide growth rates are currently in a decline and have been since 1963. It is predicted that the global growth rate will shrink to only 1 percent by 2020 and fall to less than half a percent by 2050.