Arrowhead Obsidian Neolithic Prehistory Tools Human Lithic Artifacts Stone Age Collection

Arrowhead Obsidian Bifacial mm 43 x 23 x 10 gr 7.3 Human Prehistoric Lithic Artifacts Neolithic Neozoic Quaternary Holocene Tools Worked Stones Polished Pebbles Stone Age Collecting Paleoethnology Museum.
Only a piece, as in photo.

Anthropic evidence of the Lithic Industry dating back to the earliest traces of ancient human settlements on the border between Morocco and Algeria, with artifacts such as arrowheads and cave drawings, before the appearance of the region would change abruptly about 10,000 years ago, when the Sahara began to advance, making these areas uninhabitable.

You can find in our Equipment Catalog plasticine, cardboard containers and various transparent plexiglas boxes to fiss or insert your fossils.

Lithic Industry (from the ancient Greek lithos, «stone») is an expression used in paleethnology, in the strict sense, to indicate the set of stone objects made by man, starting from intentionally modified pebbles, such as tools finished weapons, weapons and all the by-products linked to their manufacture.
In a broader sense, it is used to collectively indicate the type of tools, the way in which they were made and the materials used.
The lithic industries were used to define the different periods that marked Prehistory. For the most ancient periods (Lower and Middle Paleolithic) the lithic artefacts constitute the essential defining elements for the chronological position of the various periodisations and for possible datings, while for more recent periods, the creations of the stone industry are accompanied, starting from the Upper Paleolithic, the bone artefacts, and from the Neolithic, the ceramic ones.
Due to the difficulty of preserving organic materials (such as bones, wood, leather) over time, lithic artefacts are often the only evidence of prehistoric material culture to have survived into modern times.

Obsidian is a volcanic glass composed of 75% silicon dioxide which is formed by the rapid cooling of acidic effusive rocks. The lithotype is associated with castings with rhyolitic to basaltic chemistry. The silicate ions of which it is composed during cooling, failing to achieve the ordered formation of a crystalline lattice, take on a chaotic arrangement (amorphous structure) as in a superviscuous liquid. Obsidian is therefore a natural glass, very similar to that of human production. Very sought after in ancient times for the manufacture of sharp tools (mainly knives) it was one of the commodities that animated the trade of the Mediterranean and sustained the economic life of the places of extraction, such as Sardinia, Lipari or Pantelleria, in the prehistoric period. Today it is still worked in small decorative objects, jewelry, scalpel blades.
Pliny called it lapis obsianus or obsidianus in honor of a certain Obsius or Obsidius, who cited the stone first in some areas of Ethiopia. Some findings suggest the knowledge of stone in ancient times: the nuragic civilization used it mainly to build lances and arrows and tools of various kinds, the ancient Egyptians used obsidian to make scarabs and seals while in Central America it was used by pre-Columbian civilizations . The Aztecs (like any civilization that had them locally) used obsidian to get the tips of the arrows, knives and razors. The technique for making sharp objects from obsidian pebbles is called chipping and consists in removing chips by means of the percussion.