Question:
Which of the following is not a 1:1 type clay mineral?
Which of the following is not a 1:1 type clay mineral?
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Clay minerals:
- 1:1 type: Kaolinite, Halloysite.
- 2:1 type: Montmorillonite, Illite, Nontronite.
- 2:1:1 type: Chlorite.
- 1:1 type: Kaolinite, Halloysite.
- 2:1 type: Montmorillonite, Illite, Nontronite.
- 2:1:1 type: Chlorite.
Updated On: Aug 27, 2026
- Kaolinite
- Halloysite
- Nontronite
- Chlorite
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of clay mineral types.
Step 2: Detailed Explanation:
1:1 type clay minerals have one silica tetrahedral sheet and one alumina octahedral sheet.
Kaolinite (A): 1:1 type.
Halloysite (B): 1:1 type.
Chlorite (D): 2:1:1 type (not 1:1).
Nontronite (C): 2:1 type (smectite group), not 1:1.
Thus, Nontronite is not a 1:1 type clay mineral.
Step 3: Final Answer:
Thus, Nontronite is not a 1:1 type clay mineral, which corresponds to option (C).
[0.5cm]
This question tests knowledge of clay mineral types.
Step 2: Detailed Explanation:
1:1 type clay minerals have one silica tetrahedral sheet and one alumina octahedral sheet.
Kaolinite (A): 1:1 type.
Halloysite (B): 1:1 type.
Chlorite (D): 2:1:1 type (not 1:1).
Nontronite (C): 2:1 type (smectite group), not 1:1.
Thus, Nontronite is not a 1:1 type clay mineral.
Step 3: Final Answer:
Thus, Nontronite is not a 1:1 type clay mineral, which corresponds to option (C).
[0.5cm]
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