ALFUTECH GROUP

COAL: Is a combustible black or brownish Sedimentary rock, usually occurring in rock strata.
Uses:
• Used as a fuel
• Can be Converted to natural gas for higher purpose

OBSIDIAN: is a naturally occurring volcanic glass formed as an extrusive igneous rock.
Uses:
• Used to make extremely Sharp Knives for Surgery purpose.
• Used as ornamental purpose as a gemstone

QUARTZ: is a mineral composed of Silicon and Oxygen atoms in a continuous frame work of SiO2. Most abundant mineral in the earth’s crust next to feldspar.
Uses: Varieties of quartz have been the most commonly used in the making of jewelry and hard stone curvings.