Question

Trace elements that show affinity for sulphide minerals are called

• A. Siderophile
• B. Chalcophile
• C. Lithophile
• D. Hydrophile

Hint:

The term "Chalcophile" comes from the Greek word khalkos, meaning copper. It refers to elements that are commonly found in copper-associated sulfide ores.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The Goldschmidt classification is a geochemical system that groups chemical elements according to their preferred host phases in nature: silicate-loving (lithophile), iron-loving (siderophile), sulfur-loving (chalcophile), and gas-loving (atmophile).

Step 2: Detailed Explanation:
- Chalcophile elements (such as copper, zinc, lead, and cadmium) have a strong affinity for sulfur. They readily combine with sulfur to form insoluble sulfide minerals rather than oxide or silicate phases.
- Siderophile elements (such as iron, cobalt, and nickel) have high solubility in molten iron and tend to sink into the Earth's metallic core.
- Lithophile elements (such as silicon, aluminum, calcium, potassium, and sodium) have an affinity for oxygen and silicates, forming the bulk of the Earth's crust.
- Hydrophile elements (or atmophiles) have high solubility in water or exist primarily in gaseous states.

Step 3: Final Answer:
Elements showing high affinity for sulfide minerals are called chalcophiles.