Hornblende and the other amphiboles have what type of silicate structure?
Which of the following minerals is a ferromagnesian silicate?
What is the name of dark-coloured mica?
In silicate minerals, cleavages occur ________.
A)across the dominant silicate structures
B)in between the dominant silicate structural units
C)in random directions, unrelated to the silicate framework
D)in between mineral crystals