Question

Which one of the following minerals has a characteristic pale yellow streak?

• A. Sphalerite
• B. Pyrite
• C. Hematite
• D. Cuprite

Hint:

The streak test can help identify minerals by their true color in powdered form. Sphalerite’s pale yellow streak is one of its distinct features.

Answer 1

The Correct Option is A

Minerals exhibit different streak colors when rubbed on a porcelain plate, which is an important diagnostic tool for mineral identification.
- Sphalerite has a characteristic pale yellow streak, which is a key feature in its identification.
- Pyrite typically produces a greenish-black streak, often mistaken for gold, hence its nickname “fool's gold.”
- Hematite leaves a red streak due to its high iron content.
- Cuprite leaves a red streak as well, but with a more intense red than hematite.
Thus, the mineral with a characteristic pale yellow streak is Sphalerite. Final Answer: \[ \boxed{\text{Sphalerite}} \]