I removed your original post because you included your full name and your town. That's too much personal information for a public forum.

Question

I removed your original post because you included your full name and your town.  That's too much personal information for a public forum.

Here's your question:

Hey there, can anyone help with this question:-Mineral amphibole is composed of double chains of SiO44− tetrahedra linked together by atoms of Ca, Fe and Mg. Atoms of Al can substitute for Si and can also substitute for Mg and Fe. An example of the mineral formula of amphibole from an igneous rock is Ca2(Mg,Fe)5Al2Si7O22(OH)2. In what ways does the chemical composition of amphibole differ from the chemical compositions of dark mica (biotite) and pyroxene?

Anonymous · Answer

S104 cheat - reported to Learner Services

Anonymous · Answer

Have a look in your S104 coursebooks- all the answers are in there, I think you'll find!