Atacamite
an orthorhombic, translucent mineral, classed by Prof. Dana under his oxychlorids. The hardness is 3 to 3.5; the sp. gr., 3.7 to 4.3; the luster verging from adamantine to vitreous; the color bright green, with an apple-green streak. It is massive or pulverulent. Composition: Chlorine, 15.51 to 16.33; oxide of copper, 50 to 66.25; copper, 13.33 to 56.46; water, 16.91 to 22.60. It occurs in Atacama, in Chile; in Australia; in Africa; in Spain; and at St. Just, in Cornwall.
ATAHUALPA (at-a-whal'pa), the last Inca of Peru, was the son of the 11th Inca, Manco Capac. His mother was of royal lineage, and through her he inherited the kingdom of Quito. With his elder brother Huascar, who succeeded to the throne of the Incas in 1523, he remained at peace for five years; but, on his being summoned to acknowledge the dependency of his kingdom on that of Peru, he prepared for war, entered the dominions of Huascar with 30,000 men, defeated him in a pitched battle, and thrust him into prison. Three years afterward, Pizarro captured the island of Puna, and Huascar, hearing in prison ATALANTA of the victorious stranger, sent ambassadors to Puna requesting assistance. The inca also proposed an interview with the Spaniard, and Pizarro by treachery succeeded in obtaining possession of the person of the Inca. Huascar had been put to death by order of his brother, and now Atahualpa was declared guilty of treason to the Spanish crown, and sentenced to be burned alive, in 1533. The sentence was commuted to strangulation.