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Which of these is a single-element mineral?

AGypsum
BGraphite
CFeldspar
DCalcite
Answer & Solution
Correct answer: B. Graphite
1. Most minerals combine two or more elements. 2. Graphite, like gold and sulphur, is a single element. 3. Feldspar and quartz are compounds. _Source: syllabus Fundamentals of Physical Geography, Chapter 5, Minerals and Rocks._
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