Multiple choice

The commercial utility of the 'cassiterite' is

  1. source of copper

  2. source of tin

  3. gemstones

  4. glass and enamel

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cassiterite is tin oxide (SnO2) and is the principal ore of tin. It has been mined since ancient times as the primary commercial source of tin metal. Tin extracted from cassiterite is used extensively in solder, coatings, alloys (like bronze and pewter), and various industrial applications. Cassiterite is not a source of copper, though it is often found alongside copper ores in geological deposits.

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