What your referring to is probably fiberglass resin. It comes as a thick gel like substance, usually in dark green that may appear black.
i would hazard a guess and say asphalt
According to Merriam Webster the definition of surfacing is: material forming or used to form a surface. Surfacing is a noun. 1861 is the first known use for the word surfacing.
McKaddem
Tarmac is not a rock; it is a man-made material used for surfacing roads, driveways, and parking lots. It is a mixture of asphalt and aggregate materials that form a smooth and durable surface. Tarmac is not impermeable and can allow some water to pass through its surface.
Bitumen
Tarmac, short for tarmacadam, was patented in the 19th century by Scottish engineer John Loudon McAdam. It is a road surfacing material made of crushed stone mixed with tar or bitumen, primarily used for surfacing roads and pavements.
waste slag from blast furnaces is used for road surfacing.
Bitumen
Tarmac is not a rock by definition. It is a type of material used in road surfacing, consisting of crushed rock, tar, and bitumen. The term "tarmac" is often used colloquially to refer to paved road surfaces.
Joint compound is a modern material made of gypsum and other additives, used for finishing drywall seams and repairs. Plaster is a traditional material made of lime, sand, and water, used for creating decorative finishes and repairing walls. Joint compound is more suitable for repairing drywall due to its ease of use and compatibility with modern construction materials.
Not all Piccolo's are black, it depends on what material is used to make the instrument.
Leather and plastic
When repairing jeans or any form of denim material a heavy gauge thread is required due to the density of the material being repaired and the tension placed on the thread used because of the in-elasticity of the denim.