Earth's most abundant mineral named as Bridgmanite

American geologists have named the earth’s most abundant mineral Bridgmanite. The findings were published in the Journal Science on 28 November 2014.

• The team of American geologists extracted a sample large enough to analyse the most abundant mineral that allowed them to name it as bridgmanite.
•  The new name is in honour of Percy Bridgman, a pioneer in the use of high pressure experiments to better understand how many geological formations come about.
• Bridgmanite makes up about 70 percent of the earth’s lower mantle and 38 percent of the total volume of the earth. It is made up of high-density magnesium iron silicate.
• The lower mantle, which starts at 670 km under the crust, is difficult to access for samples.