Naturally occurring means that people did not make it. Steel is not a mineral because it is an alloy produced by people. Inorganic means that the substance is not made by an organism. Wood and pearls are made by organisms and thus are not minerals.efinite chemical composition means that all occurrences of that mineral have a chemical composition that varies within a specific limited range. For example: the mineral halite (known as  rock salt  when it is mined) has a chemical composition of NaCl.
Cyanocobalamin injection is in a class of medications called vitamins. Because it is injected straight into the bloodstream, it can be used to supply vitamin B12 to people who cannot absorb this vitamin through the intestine.
Ciprofloxacin is used to treat infections that are caused by specific types (strains) of bacteria. It is a type of quinolone antibiotic. It is used to kill the bacteria that cause infection. It works against a wide range of bacteria, but some bacteria are resistant to its effects.