Question:
Clay minerals are found commonly in
Clay minerals are found commonly in
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Building stones are grouped by their dominant chemical constituent: siliceous (silica-rich), calcareous (lime-rich), argillaceous (clay-rich) and so on. The prefix tells us the chief mineral content.
Updated On: Jun 16, 2026
- Micaceous stones
- Siliceous stones
- Calcareous stones
- Argillaceous stones
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The Correct Option is D
Solution and Explanation
Concept:
Building stones are grouped by their dominant chemical constituent: siliceous (silica-rich), calcareous (lime-rich), argillaceous (clay-rich) and so on. The prefix tells us the chief mineral content.
Step 1:
The term argillaceous refers directly to clay. Argillaceous stones are those whose main constituent is clay or clay minerals.
Step 2:
Therefore clay minerals are most commonly found in argillaceous stones, such as shale and slate, where clay forms the principal material.
Answer: Option (4) — Argillaceous stones.
Building stones are grouped by their dominant chemical constituent: siliceous (silica-rich), calcareous (lime-rich), argillaceous (clay-rich) and so on. The prefix tells us the chief mineral content.
Step 1:
The term argillaceous refers directly to clay. Argillaceous stones are those whose main constituent is clay or clay minerals.
Step 2:
Therefore clay minerals are most commonly found in argillaceous stones, such as shale and slate, where clay forms the principal material.
Answer: Option (4) — Argillaceous stones.
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