Nickel is not a mineral it is a metallic element. The main ores of Nickel Nickel are arsenides such as chloanthite (NiAs2), and the sulphides such as millerite (NiS) and pentlandite ((Ni,Fe)9S8).
Zinc is a metal element and is not classified under a specific mineral group. It is commonly found in nature as the mineral sphalerite, which is a zinc sulfide.
The tourmaline group (cyclosilicates)
Chalcopyrite is in the sulfide mineral group.
Valentinite belongs to the antimony mineral group.
Ruby belongs to the mineral group Corundum
It is part of the sulphide mineral group.
7 quarters and 11 nickles
Tremolite is a member of the amphibole mineral group.
7 quarters = 1.7511 nickels = 0.551.75 + 0.55 = 2.30
Talc belongs to the mineral group known as silicates.
Silicates are the mineral group that contain silicon, carbonates are the mineral group that contain carbon, halides are the mineral group that contain halogen elements, and sulfides are the mineral group that contain sulfur. Each of these mineral groups encompasses a variety of minerals with different chemical compositions.
willemite