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Apache tears are rounded pebbles of obsidian or "obsidianites" composed of black or dark-colored natural volcanic glass, usually of rhyolitic composition and bearing conchoidal fracture. Also known by the lithologic term marekanite, this variety of obsidian occurs as subrounded to subangular bodies up to about 2 in (51 mm) in diameter, often ...
Obsidian (/ ə b ˈ s ɪ d i. ən, ɒ b-/ əb-SID-ee-ən ob-) [5] is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. [6] Obsidian is produced from felsic lava, rich in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium.
Yasuke is the earliest known African to appear in Japanese historical records, though few records exist. Much of what is known about Yasuke appears in fragmentary accounts in the letters of the Jesuit missionary Luís Fróis, Ōta Gyūichi's Shinchō Kōki (信長公記, Nobunaga Official Chronicle), Matsudaira Ietada's Matsudaira Ietada Nikki (松平家忠日記, Matsudaira Ietada Diary ...
Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre-Columbian Mesoamerica. Obsidian was a highly integrated part of daily and ritual life, and its widespread and varied use may be a significant contributor to Mesoamerica's lack of metallurgy.
Edziza obsidian. Edziza obsidian is a naturally formed volcanic glass found at the Mount Edziza volcanic complex in northwestern British Columbia, Canada. It occurs in at least four geological formations of the volcanic complex and was widely used by indigenous peoples during the pre-Columbian era. As a result of its widespread use, Edziza ...
The Urfa man, also known as the Balıklıgöl statue, is an ancient human shaped statue found during excavations in Balıklıgöl near Urfa, in the geographical area of Upper Mesopotamia, in the southeast of modern Turkey. [1][2] It is dated c. 9000 BC to the period of the Pre-Pottery Neolithic, and was considered as "the oldest naturalistic ...
Mirrors in pre-Columbian Mesoamerica were fashioned from stone and served a number of uses, from the decorative to the divinatory. [3] An ancient tradition among many Mesoamerican cultures was the practice of divination using the surface of a bowl of water as a mirror. At the time of the Spanish conquest this form of divination was still ...
In 1979, Sergio Rapu Haoa and a team of archaeologists discovered that the hemispherical or deep elliptical eye sockets were designed to hold coral eyes with either black obsidian or red scoria pupils. [18] The discovery was made by collecting and reassembling broken fragments of white coral that were found at the various sites.