1. using the geologic definition of mineral as your guide, determine which of the items in this list are minerals and which are not. if something in this list is not a mineral, explain. 1. gold nugget 2. seawater 3. quartz 4. cubic zirconia 5. obsidian 6. ruby 7. glacial ice 8. amber

Explanation:

Geologists defines a mineral as a naturally occuring solid, which is inorganic with a uniquely ordered structure and a definite chemical composition.

Gold nugget based on this definition is mineral. It is a solid and it occurs naturally. It is made up of gold atoms.

Seawater is not a mineral. It is a liquid and does not have definite composition.

Quartz is a mineral with a definite composition. It occurs naturally and it is a solid.

Cubic zirconia is not a mineral. It is not naturally occuring. It is man made.

Obsidian is not a mineral. It is a mineraloid due to its form. It is glass-like in nature. In obsidian, the crystals do not have time to form an ordered structure.

Ruby is a silicate mineral. It is naturally occuring and fits the description of minerals.

Glacial ice is a mineral. It is solid, inorganic, naturally occuring, and has a definite composition.

Amber is an organic compound and not a mineral.