Tags: Chemical Substance, Mineral.
Hornblende is a complex inosilicate series of minerals (ferrohornblende – magnesiohornblende). It is not a recognized mineral in its own right but the name is used as a general or field term to refer to a dark amphibole.Hornblende is an isomorphous mixture of three molecules; a calcium-iron-magnesium silicate an aluminium-iron-magnesium silicate and an iron-magnesium silicate. The general formula can be given as (CaNa)2–3(MgFeAl)5(AlSi)8O22(OHF)2.
