What is charnockite used for?
Charnockite is used in the construction of structures like roads, bridges, and buildings. They are also used in the field of pottery. They are used to make pots commonly found in the kitchen.
Why charnockite is so named?
Charnockite series It is formed mostly from the granite clan of rocks, or occasionally from thoroughly reconstituted clays and shales. It was named by geologist T. H. Holland in 1893 after the tombstone of Job Charnock, in St John’s Church in Kolkata, India, which is made of this rock.
What is charnockite gneiss?
XML. Leucocratic to mesocratic, coarse grained, porphyritic, pyroxene-bearing granite gneiss; well-developed shear foliation is superimposed on segregation layering defined by quartz-feldspar and mafic-rich domains; includes mylonitic augen gneiss.
What is a charnockite series?
charnockite, any member of a series of metamorphic rocks with variable chemical composition, first described from the state of Tamil Nadu in southern India and named for Job Charnock. The term is often limited to the characteristic orthopyroxene granite of the series.
What kind of rock is charnockite?
Charnockite is a series of foliated metamorphosed igneous rock of wide distribution.
What is incipient charnockite?
Abstract. Southern India and Sri-Lanka are the places where “incipient charnockites”, i.e. the local transformation of amphibolite-facies gneisses into orthopyroxene-bearing, igneous looking charnockites, have been discovered in the early sixties.
Where is charnockite located?
Thomas Mount, located to the south of the Chennai city, in Pallavaram suburb, Tamil Nadu, is a characteristically profuse exposure of quartz–feldspar–hypersthene rock, illustrated by occurrence of two pyroxene facies metamorphism.
What is Khondalite rocks?
Khondalite is a foliated metamorphic rock. In India, it is also called Bezwada Gneiss and Kailasa Gneiss. It was named after the Khond tribe of Odisha and Andhra Pradesh because well-formed examples of the rock were found in the inhabited hills of these regions of eastern India.
How do you identify Khondalite?
Composition. Khondalite is quartz–manganese-rich garnet–rhodonite schist. It may also contain sillimanite and graphite. Feldspar may occur in some cases.
What type of rock is Khondalite?
What is the texture of Khondalite?
Grain size is generally 2–3 mm; commonly there is a foliation subparallel to lithological layering, but in some rocks the texture is granulose. Polyphase metamorphic mineral growth is shown with the peak of metamorphism being ⊔600°C. Some leucosome–melanosome banding may represent partial melt and restite.