Question 2: Greases used for axles are composed of a compound of fatty oils to which mica, tar or ________ is added to increase the durability of the grease and give it a better surface.
Question 3: ________-bonded mica or micanite or built up micanite from splittings or agglomerated micanite made from pulped mica powder are called micanites.
Question 7: The highly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its ________.