sillimanite वाक्य
उदाहरण वाक्य
मोबाइल
- This sequence can be divided into four main units, as Kyanite-Sillimanite gneiss, pyroxenic marble and gneiss, banded gneiss, and augen gneiss in the ascending order.
- Among the minor minerals, there are quartzite reserves in the Nagaon district, kaolin reserves in Karbi Anglong and the Lakhimpur districts and sillimanite-bearing rocks in Karbi Anglong district.
- This is usually related to the metamorphic temperatures of pelitic or aluminosilicate rocks and the minerals they form . The metamorphic grades of aureoles are andalusite hornfels, sillimanite hornfels, pyroxene hornfels.
- It occurs as argillaceous inclusions in volcanic rocks in the Isle of Mull, inclusions in sillimanite within a tonalite at Val Sissone, Italy and with emerylike rocks in Argyllshire, Scotland.
- Gedrite occurs in contact and medium to high grade metamorphic rocks in association with garnet, cordierite, anthophyllite, cummingtonite, sapphirine, sillimanite, kyanite, quartz, staurolite and biotite.
- The associated minerals with khamralite ( sillimanite, surinamite, musgravite, garnet, and biotite ) saturated it in BeO, allowing the BeO content to be close to the maximum possible.
- The aluminosilicates kyanite, andalusite, and sillimanite, all Al 2 SiO 5 are structurally composed of one [ SiO 4 ] 4 " tetrahedron, and one Al 3 + in octahedral coordination.
- A subgroup is the andalusite-, staurolite-, kyanite-and sillimanite-schists which usually make their appearance in the vicinity of gneissose granites, and have presumably been affected by contact metamorphism.
- These granites, which are collectively called the " Gold Butte Granite ", intrude garnet-cordierite-sillimanite and hornblende gneisses, migmatites, and older granites, pyroxenites, and hornblendites.
- In central Nepal, the upper Formation III consists of augen orthogneisses, whereas the Middle Formation II are calcsilicate gneisses and marbles, and the basal Formation I are kyanite-and sillimanite bearing metagreywacke with abundant quartzite.
- Sillimanite has been found in Brandywine Springs, New Castle County, Delaware, US . It was named by the State Legislature in 1977 as the state mineral of Delaware by suggestion of the Delaware Mineralogical Society, Inc.
- Andalusite has the second aluminium in five-fold coordination ( Al [ 6 ] Al [ 5 ] SiO 5 ) and sillimanite has it in four-fold coordination ( Al [ 6 ] Al [ 4 ] SiO 5 ).
- Kerala Minerals and Metals ( KMML ), a Government of Kerala undertaking located on the beaches of Shankaramangalam ( Chavara ), produces high-grade chemical compounds of titanium such as titanium dioxide pigment, hafnium ore, sillimanite and monazite.
- The remaining Al 3 + can be in six-fold coordination ( kyanite ), five-fold ( andalusite ) or four-fold ( sillimanite ); which mineral forms in a given environment is depend on pressure and temperature conditions.
- Andalusite, kyanite, and sillimanite are naturally occurring aluminosilicate minerals that have the composition polymorphs is located at a temperature of 500 �C and a pressure of 0.4 GPa . These three minerals are commonly used as index minerals in metamorphic rocks.
- The highest-grade rocks ( kyanite and sillimanite gneisses ) are found within the MCT shear zone, i . e . upper Lesser Himalaya . places two thrusts ( MCT I and MCT II ) on each side of the MCT shear zone.
- Apart from producing rutile-grade titanium dioxide pigment for various types of industries, it also produces other products like ilmenite, rutile, zircon, sillimanite, synthetic rutile etc . It is one of the best performing Public Sector Units in India.
- Another example are the aluminosilicates kyanite, andalusite, and sillimanite ( polymorphs, as they share the formula Al 2 SiO 5 ), which differ by the coordination number of the Al 3 +; these minerals transition from one another as a response to changes in pressure and temperature.
- Among accessory minerals, in addition to apatite, zircon, and iron oxides, the following may be mentioned : hornblende ( not common ), riebeckite ( rare ), epidote and zoisite, calcite, sphene, andalusite, sillimanite, kyanite, hercynite ( a green spinel ), rutile, orthite and tourmaline.
- In addition, G . G . Rusanov found malachite, axinite, sillimanite and cinnabar in the schlichs of the ripple marks in Kuray Basin, which are characteristic of the Kuray Ridge but not found in the schlichs of the end moraines of the Tetio River, the latter adjoining the fields of the giant ripples.
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