Question

An example of nesosilicate is:
A.Spodumene
B.Willemite
C.beryl
D.quartz

Answer 1

Hint: To answer this question we must have the knowledge about nesosilicate chemistry. An example of nesosilicate is a zinc silicate and it is fluorescent in nature.

Complete step by step solution:
Silicates are the minerals that are formed by various silicate groups. They constitute about ninety percent of the earth crust and are very vital minerals. There are various types of silicates such as orthosilicate or nesosilicates, sorosilicate, cyclosilicate, inosilicate, phyllosilicate and tectosilicates.
Nesosilicate contains orthosilicate ions, there are various examples of nesosilicates such as Phenakite, Willemite, forsterite, Fayalite, Tephroite, pyrope, Almandine, Grossular, Zircon, Thorite, Hafnon, Topaz etc.
Willemite is one such example of nesosilicates, it is a zinc silicate mineral. This is also an ore of zinc from which zinc can be extracted. Under ultraviolet radiations it undergoes photochemical changes and produces green fluorescent. It has a trigonal crystal system. Willemite was discovered in Vieille-Montagne mine in 1892. It is also found in marble with limestone. It is found in many places but the best of it is found in Arizona deposits and Franklin and sterling mine. It has very much colour composed in it. It is used in fluorescent tubes. It is doped with many other elements such as manganese.
Hence, the correct option is B.

Note: Spodumene is a lithium aluminium inosilicate. It also consists of many colours in its crystal. Beryl is a mineral that is made up of beryllium aluminium cyclosilicate. They may be opaque or transparent and are used in making emeralds. They have a hexagonal crystal system. Quartz is basically silver oxide and is made up of silver and oxygen