Question:
Which of the following is a Clay mineral?
Which of the following is a Clay mineral?
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Kaolinite is an important clay mineral and is widely used in whiteware and ceramic industries.
Updated On: May 7, 2026
- Quartz
- Gypsum
- Kaolinite
- Feldspar
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
Clay minerals are fine-grained hydrous alumino-silicate minerals. They are important raw materials in ceramic bodies because they provide plasticity and help in shaping.
Step 1: Quartz is a silica mineral. \[ Quartz = SiO_2 \] It is not a clay mineral.
Step 2: Gypsum is calcium sulphate dihydrate. \[ Gypsum = CaSO_4\cdot 2H_2O \] It is not a clay mineral.
Step 3: Feldspar is an alumino-silicate mineral of potassium, sodium, or calcium. It is mainly used as a flux in ceramics.
Step 4: Kaolinite is a true clay mineral. Its formula is commonly written as: \[ Al_2Si_2O_5(OH)_4 \]
Step 5: Since kaolinite belongs to the clay mineral group, the correct answer is: \[ \boxed{\text{Kaolinite}} \]
Step 1: Quartz is a silica mineral. \[ Quartz = SiO_2 \] It is not a clay mineral.
Step 2: Gypsum is calcium sulphate dihydrate. \[ Gypsum = CaSO_4\cdot 2H_2O \] It is not a clay mineral.
Step 3: Feldspar is an alumino-silicate mineral of potassium, sodium, or calcium. It is mainly used as a flux in ceramics.
Step 4: Kaolinite is a true clay mineral. Its formula is commonly written as: \[ Al_2Si_2O_5(OH)_4 \]
Step 5: Since kaolinite belongs to the clay mineral group, the correct answer is: \[ \boxed{\text{Kaolinite}} \]
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