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.
In demographics, the world population is the total number of humans currently living. The world population was estimated to have reached 7.6 billion as of December 2017. The United Nations estimates it will further increase to 11.8 billion by the year 2100. World population has experienced continuous growth since the end of the Great Famine of 1315â17 and the Black Death in 1350, when it was near 370 million. The highest population growth rates â global population increases above 1.8% ...