This article will help you to learn about the rock cycle with diagram. The change of one rock into another type under different conditions of heat, pressure, weathering and erosion is known as rock cycle. Initially, all minerals originated from igneous rocks. As soon as igneous rocks are exposed they are weathered and eroded by […]
Rock Cycle: With Diagram | Petrology | Geology
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Classification of Rocks | Petrology | Geology
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The rocks can be classified into two main varieties, namely, Igneous rocks and Sedimentary rocks. But when these rocks are subjected to prolonged fluctuations of temperature and pressure, they are transformed to a new variety which is termed as Metamorphic rocks. 1. Igneous Rocks: A change of temperature caused the formation of igneous rocks. It […]
Classification of Minerals | Mineralogy
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The minerals are classified into following groups:- 1. Quartz Group 2. Feldspar Group 3. Mica Group 4. Amphibole Group 5. Garnet Group 6. Kaolin 7. Carbonate Group 8. Sulphide Group 9. Oxide Group 10. Sulphate Group 11. Staurolite and Talc. 1. Quartz Group: Form—Granular Colour—(Varieties of quartz) Streak—Colourless Lustre—Vitreous Cleavage—Absent Fracture—Conchoidal to uneven Hardness—7 [High] […]