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obsidian
Table of Contents
Introduction & Top Questions References & Edit History Related Topics
Images & Videos
obsidian obsidian boulders obsidian volcanic glass rock textures
See a researcher making an Oldowan flint flake from obsidian through a technique known as knapping
Quizzes
Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.
(Bed) Rocks and (Flint) Stones
Related Questions
Read Next
solar eclipse, sun, moon, astronomy, space
How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?
Arrangement of the phases of the moon in total eclipse with Blood Moon
9 Celestial Omens
Solar system illustration. (planets; sun)
Why Are Planets Round?
Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)
How Fast Is the Universe Expanding?
Astronomical Observatory of the Mojon del Trigo. Long exposure using the star trail technique. Sierra Nevada National Park, in the province of Granada, Andalusia.
Is Earth Going to Change the Direction in Which It Rotates?
Discover
Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009
Which Is Correct: Hanukkah or Chanukah?
King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes
Indian hijras participate in a religious procession in Gandhinagar, India, some 30 kilometers from Ahmedabad, on March 22, 2017. Hijra is a term used in South Asia which refers to transgender individuals who are born male. (gender identity, gender expression)
6 Cultures That Recognize More than Two Genders
Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics
10 Best Hockey Players of All Time
The Prado Museum facade at the Diego Velaszquez memorial. Established in 1819, the museum is considered the best collection of Spanish art and one of the world's finest collections of European art. Madrid, Spain
20 Paintings You Have to Visit at the Museo del Prado in Madrid
The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.
What If the President Is Impeached?
Facsimile of one of William Henry Ireland's forgeries, a primitive self-portrait of William Shakespeare(tinted engraving). Published for Samuel Ireland, Norfolk Street, Strand, December 1, 1795. (W.H. Ireland, forgery)
The Time a Law Clerk Successfully Forged a New Shakespeare Play to Impress His Dad

obsidian: References & Edit History

Article History

Type Description Contributor Date
Add new Web site: University of Sunderland - SURE - Using obsidian in glass art practice (PDF). Dec 06, 2024
Add new Web site: CORE - Inclusions and the color of obsidian. Aug 12, 2024
Add new Web site: World History Encyclopedia - Obsidian in Mesoamerica. May 12, 2023
Add new Web site: International Gem Society - Obsidian Value, Price, and Jewelry Information. Feb 13, 2023
Add new Web site: Geology.com - Obsidian. Nov 19, 2022
Changed “primitive” to “early.” Nov 04, 2021
Top Questions updated. May 28, 2021
Corrected display issue. Mar 02, 2021
Add new Web site: Oregon State University - Volcano World - Obsidian. May 10, 2018
Mentioned obsidian's igneous rock nature. Dec 27, 2016
Added video. Dec 23, 2015
Added image of obsidian. Mar 07, 2012
Photograph depicting obsidian boulders added. Apr 04, 2011
Media added. Aug 14, 2008
Added new Web site: Amethyst Galleries - The Mineral Obsidian. Jun 04, 2008
Added new Web site: USGS - Volcano Watch — Obsidian, a scarce commodity in Hawaiʻi. Jan 17, 2008
Added new Web site: Amethyst Galleries' Mineral Gallery - The Mineral Obsidian. Jan 17, 2008
Article revised and updated. Dec 08, 2006
Article added to new online database. Jul 20, 1998
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