Which of the following best characterizes ferromagnesian silicates?


23) Which of the following best characterizes ferromagnesian silicates? A) They are black to dark-green, silicate minerals co

Answer

23) Option A is correct. They are black to dark-green, silicate minerals containing iron and magnesium. Ferromagnesium Silicates is a mineral in which cations of iron and magnesium form essential chemical components which is dark in colour. 24) Option A is correct. Cleavage Cleavage is describe as a mineral’s response to mechanical impact. 25) Option A is correct. Silicon, oxygen Silicates are minerals that contain silicon atoms bonded to oxygen atoms. 26) Option A is correct. Covalent Covalent bonds are chemical bonds that are formed by sharing valence electrons between adjacent atoms. 27) Option A is correct. double chains

Hornblende and the other amphiboles have double chains type of silicate structure.

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