Carbon the very large masses of carbonate rock (limestone, dolomite, marble and so on). Coal is very rich in carbon (anthracite contains 92–98%) and is the largest commercial source of mineral carbon, accounting for 4,000 gigatonnes or 80% of fossil fuel. As for individual carbon allotropes, graphite is found in large quantities in the United States (mostly in New York and Texas), Russia, Mexico, Greenland, and India. Natural diamonds occur in the rock kimberlite, found in ancient volcanic "necks", or "pipes". Most diamond deposits are in Africa, notably in South Africa, Namibia, Botswana, the Republic of the Congo, and Sierra Leone.
Council at the Highest Court of the Russian Empire In 1786, a senior member of the Collegium of Foreign Affairs, Count Alexander Bezborodko (died in 1799) entered the council. In 1787, the council included: In 1792, the Senate Prosecutor General Alexander Samoylov entered the council. Council at the Highest Court of the Russian Empire The Council at the Highest Court was the highest advisory institution in the Russian Empire that existed since 1768 to 1801. It was created on November 28, 1768 by Catherine the Great as an emergency body to discuss issues related to the conduct of the war with the Ottoman Empire. Initially, it was going irregularly,