Question

2. Black and splintery, 2 cleavage, barely scratches glass​

Answer 1

Answer:

Hornblende

Explanation:

It is a mineral that usually in black or green color that has two cleavages, and it is more firm than glass.

Answer 2

Black and splintery, 2 cleavage, barely scratches glass​.

The  mineral is hornblende.

Hornblende - Hornblende is a complex inosilicate series of minerals. 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.

Properties of mineral:

It is Non-metallic,

It is black in color and splintery in texture.

It is usually Harder than glass, so it barely scratches glass.

Usually black or dark green.

It have 2 cleavages at 60°/120° (56°/124°).