Question

Describe the physical properties of minerals belonging to quarts and garnet groups of minerals giving suitable examples. 

07 Feb 2023
Answer :
Word Count : 680

Quartz and garnet are two groups of minerals that have distinct physical properties. These properties are important in identifying the minerals and determining their uses.

Quartz Group:

  1. Hardness: Quartz minerals are known for their high hardness and are often used as abrasives. The hardness of quartz minerals ranges from 7 to 7.5 on the Mohs scale, making them the second-hardest mineral group after diamonds.

  2. Transparency: Quartz minerals are transparent to translucent, and their degree of transparency can vary depending on the presence of inclusions.

  3. Cleavage: Quartz minerals have no cleavage, meaning that they do not break along smooth flat surfaces.

  4. Luster: Quartz minerals have a glassy luster, meaning that they reflect light like glass.

  5. Color: Quartz minerals are commonly colorless, but they can also be gray, black, purple, yellow, pink, and red.

Examples of quartz minerals include:

  • Quartz (SiO2): The most common mineral in the quartz group, quartz is commonly found in many rock types, including igneous, _____ __________ ___ ______ _________.
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