Describe the physical properties of minerals belonging to quarts and garnet groups of minerals giving suitable examples.
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:
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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.
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Transparency: Quartz minerals are transparent to translucent, and their degree of transparency can vary depending on the presence of inclusions.
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Cleavage: Quartz minerals have no cleavage, meaning that they do not break along smooth flat surfaces.
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Luster: Quartz minerals have a glassy luster, meaning that they reflect light like glass.
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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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