Earth materials (rocks and minerals) questions.

Match the items in Group A and those from Group B.

Write short textural or rock name of the following properties

1. Textural term for minerals formed at different temperatures as well as differing rates……………
2. Exceptional coarse grained igneous rock forming in late stages of crystallization of granitic magmas……..
3. A type of granite rock with over 90% alkali feldspars, 20-60% quartz and <10% plagioclase……..
4. A clastic sedimentary rock comprised of angular cobbles and boulder sized sediments…….

Write short textural or rock name of the following properties

1. A sandstone rock with <15% matrix and comprised of almost feldspars and quartz…….
2. A contact metamorphic zone is commonly referred as …….
3. A non foliated metamorphic rock composed of predominantly quartz…..
4. A high grade rock of peratic, mafic or quartzo-feldspathis parentage that is predominantly composed of OH-free minerals ….
5. An intermediate fine grained igneous rock comprised of mainly Amphibole and Na-and  Ca-rich plagioclase…..
6. A green and red metamorphic rock that contains clinopyroxene and garnet , but whose protolith is typically basaltic…….

Define the following terms

1. Mineral
2. Rock

Which is the basic structure of all silicate minerals?

Mention at least 2 minerals which belong to cyclosilicate.

Define Polymorphism as applied in mineralogy.

With examples briefly explain the following terms as applied in mineralogy

1. Cleavage
2. Magnetism

Differentiate the following terms as applied in physical properties of minerals

1. Colour and streak
2. Fracture and Tenacity

Give the common physical property of the minerals in phyllosilicate group