* Obsidian, volcanic glass-non-crystalline structure, a glass and quartz mixture

Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.

Obsidian, natural volcanic glass, shatters easily and was rarely used.

Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre-Columbian Mesoamerica.

Obsidian and other volcanic debris have been found in the area.

Obsidian is a black volcanic glass that was used to make knives, chisels, adzes, and other sharp tools in pre-contact times.

Obsidian is a natural volcanic glass that was used across Mesoamerica to make durable tools and weapons including knives, spearheads, arrowheads, bloodletters for ritual autosacrifice, prismatic blades for woodwork and many other day-to-day tools.

Obsidian is a volcanic glass that was sometimes used as a raw material in the manufacture of stone tools such as projectile points, knives, or other cutting tools through the process of flintknapping.

Obsidian from the volcanic fields was traded all the way to the California coast in San Diego, San Luis Opisbo County, Santa Barbara, California, and throughout the Mojave Desert and regions further east.

Obsidian is a type of volcanic glass.

Obsidian is mineral-like, but not a true mineral because as a glass it is not crystalline ; in addition, its composition is too complex to comprise a single mineral.

Obsidian is exposed locally on most extrusions, and analyses of fresh glass indicate that all of the rhyolite is of the so-called high-silica variety ; SiO < sub > 2 </ sub > content is essentially constant at 77 percent.

Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition ( high silica content ) induces a high viscosity and polymerization degree of the lava.

Obsidian can be found in locations which have experienced rhyolitic eruptions.

Obsidian flows which may be hiked on are found within the calderas of Newberry Volcano and Medicine Lake Volcano in the Cascade Range of western North America, and at Inyo Craters east of the Sierra Nevada in California.

Obsidian can also be found in the eastern U. S. states of Virginia, as well as Pennsylvania.

Obsidian is thought to have provided the material to make cutting utensils or tools, although since other more easily obtainable material were available, use was found exclusive to the higher status of the tribe using " the rich man's flint ".

Obsidian and stone tools found at excavation sites near Jōraku-ji were dated to the Old Stone Age ( between 100, 000 and 10, 000 years ago ).

Obsidian from Milos has also been found.

Obsidian prismatic blade production was ubiquitous in Mesoamerica, and these tools can be found at a large majority of Mesoamerican archaeological sites from the Preclassic period on until the arrival of the Spanish in the early 16th century.

Strains of this microbe were also found on the Sub-polar Mid Oceanic Ridge, and in the Obsidian Pool in Yellowstone National Park.

In Obsidian Finance Group, LLC v. Cox, the United States District Court for the District of Oregon found that to qualify as a reporter, a standard of professionalism must be met, including but not limited to being associated with a traditional news print or television media outlet or obtaining a journalism degree.

When Interplay ran into financial difficulties, and Black Isle's future became uncertain, Urquhart and several other industry veterans departed to found Obsidian Entertainment.

Obsidian objects found in various Texan sites attest of trade with cultures in present day Mexico and the Rocky Mountains.

Another novel, The Sundered Worlds, appears in the White Wolf Publishing omnibus collection The Eternal Champion ( with the novels The Eternal Champion and Phoenix in Obsidian, in between the two ), but only as a bonus novel ; it is not part of the Erekosë series.

The " Third Maelstrom ," which had just come to a close, left the Shadowlands relatively free from obstruction, and European renegades revolting against Stygia fled en masse to the Dark Kingdom of Obsidian, only to discover that its afterlife was as enraged as its living counterpart was decimated.

Due to the RiD universe not being remotely connected to the original series, Beast Wars and Beast Machines universe, and the fact that this Obsidian did not appear in the TV show or in any other fiction, nor did he receive any sort of biography from Hasbro ; it can only be presumed that he was a completely different character.

He discovered the true nature of the Heart of the Void, a stone which the Fallen can use to melt the world, in which the stone resides, into their own dark plane of existence and crafted the Three Seals, which prevent the Stone from working and as a last line of defense constructed, using mostly only his vast amounts of magical power, the Obsidian Tower and founded the Council of Mages to guard the Stone and the Order of Ruannon to watch over the Seals and the Chamber of Screams.

Alric and Dragga then march to the Obsidian Tower only to find that the ceremony of fusing this world into that of the fallen's has already begun.

Obsidian Entertainment's new Fallout title, Fallout: New Vegas was published in 2010.

Lindberg occasionally provides guest vocals as seen on Darkest Hour's " The Sadist Nation ", Transistor Transistor's " Young Vampires of New Hampshire " 7 ", and on Slowmotion Apocalypse's, " The Blessing " on the 2007 ' Obsidian ' album.

Fallout: New Vegas was developed by Obsidian Entertainment with many former Black Isle employees who created Fallout and Fallout 2.

This proves to be detrimental to Richard and Jean-Claude in Obsidian Butterfly, where she learns from a powerful vampire in New Mexico that it weakens all three of them.

On April 20, 2009, Bethesda Softworks announced that a new game in the Fallout series, Fallout: New Vegas would be developed by Obsidian.

They were turned down for membership, but together with Star-Spangled Kid, Obsidian, Jade, Brainwave Jr., Power Girl and the Huntress they formed their own group Infinity, Inc .. During one of his adventures with Infinity, Inc., he assisted in moving the Hidden City of Feithera to a location called New Feithera.

* Fallout: New Vegas ( 2010 ), Obsidian Entertainment

Obsidian is hard and brittle ; it therefore fractures with very sharp edges, which had been used in the past in cutting and piercing tools, and has been used experimentally as surgical scalpel blades.

They were made from Obsidian that had been transported from Anatolia

The Imperium invades Vyrgothia, besieging the fortress of Gul-Kothoth, but the Over-King of Vyrgothia unleashes the dread Obsidian Crown, which contains arcane power and was once wielded by the Shadow King, an entity of immense power who had slumbered for many aeons.

On December 13, 2006, SEGA officially announced that Obsidian Entertainment had been signed to develop a role-playing game based on the Aliens film franchise.

Some reviews compared Neverwinter Nights 2 to Star Wars: Knights of the Old Republic II, a previous Obsidian game that had received similar complaints.

Chroma further states that if Obsidian had managed to attack him a second time, Chroma would have let this earth-form die, thus preventing humanity from ever forgetting his song.

" Obsidian and Strika had a MAGNIFICENT scene in which they return to Cybertron and decline an offer to be reformatted themselves ( partly because they feel unworthy because of their role helping Megatron, and party because I wanted them to remain " pure " when I brought them back in the next series ... which ( as of this writing ) I haven't been invited onto yet.

His bio indicated he that similar to the real Obsidian, had previously been a great general, captured and turned into a Vehicon by Megatron.

Like Obsidian, Strika was not given an alternate personality, as the previous Vehicon Generals had.

" Obsidian and Strika had a MAGNIFICENT scene in which they return to Cybertron and decline an offer to be reformatted themselves ( partly because they feel unworthy because of their role helping Megatron, and partly because I wanted them to remain " pure " when I brought them back in the next series ... which ( as of this writing ) I haven't been invited onto yet.

On July 19, 2005 GameSpot announced that he had left Midway's Gauntlet: Seven Sorrows, and was already employed by Obsidian Entertainment to work on Neverwinter Nights 2.