Obsidian.
the sedementary rock that is black is called hornblende
the sedementary rock that is black is called hornblende
A black glass-like rock could be obsidian, which is a natural volcanic glass formed from rapidly cooled lava. Obsidian is usually black in color and has a shiny, glassy appearance due to its lack of crystalline structure. It is commonly used in jewelry and decorative objects.
a Black Rock
It is commonly called "volcanic glass".
The black rock in the TV show LOST is an old ship, that is called black rock.
There is a black rock band called PAR~A~DIGM There is also The Rocturnals that appears to be black
ash glass rock lava
It is called a Frit, which is the black area around the perimeter of auto glass. It help diffuse sunlight from destroying the adhesive of the windshield. Source Glass.net
The rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed during rapid cooling of lava. It is usually black in color and has a smooth, glassy texture.
Obsidian is an extrusive felsic igneous rock.
A black rock full of energy is most likely obsidian, which is a natural volcanic glass formed during rapid cooling of lava. Obsidian is known for its sharp edges and ability to hold energy from the Earth.