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  2. Obsidian - Wikipedia

    en.wikipedia.org/wiki/Obsidian

    The use of obsidian tools was present in Japan near areas of volcanic activity. [50] [51] Obsidian was mined during the Jōmon period. Obsidian has also been found in Gilat, a site in the western Negev in Israel. Eight obsidian artifacts dating to the Chalcolithic Age found at this site were traced to obsidian sources in Anatolia.

  3. List of fictional elements, materials, isotopes and subatomic ...

    en.wikipedia.org/wiki/List_of_fictional_elements...

    Three precious metals found in Earth's interior. Aquelium is a bright green metal derived from the interior ocean, and terrelium is a vermilion metal found only in Atvatabar. When these two metals come in contact, they produce a harnessable form of energy called magnicity. Arenak Skylark: A synthetic metal made by Osnomians.

  4. Obsidian hydration dating - Wikipedia

    en.wikipedia.org/wiki/Obsidian_hydration_dating

    Obsidian hydration dating (OHD) is a geochemical method of determining age in either absolute or relative terms of an artifact made of obsidian.. Obsidian is a volcanic glass that was used by prehistoric people as a raw material in the manufacture of stone tools such as projectile points, knives, or other cutting tools through knapping, or breaking off pieces in a controlled manner, such as ...

  5. Terraria - Wikipedia

    en.wikipedia.org/wiki/Terraria

    Terraria (/ t ə ˈ r ɛər i ə / ⓘ tə-RAIR-ee-ə [1]) is a 2011 action-adventure sandbox game developed by Re-Logic. The game was first released for Windows and has since been ported to other PC and console platforms.

  6. Scrying - Wikipedia

    en.wikipedia.org/wiki/Scrying

    The media most commonly used in scrying are reflective, refractive, translucent, or luminescent surfaces or objects such as crystals, stones, or glass in various shapes such as crystal balls, mirrors, reflective black surfaces such as obsidian, water surfaces, fire, or smoke, but there is no special limitation on the preferences or prejudices ...

  7. Hadal zone - Wikipedia

    en.wikipedia.org/wiki/Hadal_zone

    The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches.The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level, and exists in long, narrow, topographic V-shaped depressions.

  8. Apache tears - Wikipedia

    en.wikipedia.org/wiki/Apache_tears

    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 ...

  9. Dwarf Fortress - Wikipedia

    en.wikipedia.org/wiki/Dwarf_Fortress

    Crossbows can be made for ranged attacks and a range with targets can be constructed for training. Walls can be carved into fortifications and be used by ranged-units during attacks. [24] Training areas can be made to train war animals, such as dogs. Players can use traps and engineering in addition to training an army. [30]