Which mineral is commonly found in the three metamorphic rocks slate, schist and gneiss

Quartz is the mineral that is commonly found in the three metamorphic rocks slate, schist and gneiss. Although quartz is quite visible to the naked eye in schist and gneiss, it is not visible in slate outside of microscopic tools.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.