What are Minerals and Vitamins?
Mineral: A solid, inorganic substance with definite chemical composition and crystal structure. Found on Periodic Table.
Vitamin: Organic substances that are needed in small quantities in order for normal plant and animal growth.
Copper is a Mineral!
Water Soluble: Dissolves easily in the body (water)
Fat Soluble: Dissolves easily in fats and oils.
Sources
http://www.livestrong.com/article/497038-the-effects-of-too-little-copper-in-the-body/
https://www.thebalance.com/what-is-copper-2340037
https://draxe.com/top-10-copper-rich-foods/