Halite.
No, halite is a chloride
Yes, Halite is an Inorganic.
No, Halite is not a magnetic mineral.
Halite does not react with HCl.
Halite has perfect cleavage in 3 planes or axes at right angles, meaning halite often forms nearly perfect cubes.
Halite has perfect cleavage in three directions and is in the cubic crystal system.
Halite forms cubes. It has excellent cleavage in 3 directions, which is why it breaks into cubes.
galena, pyrite, fluorite, perovskite, or halite cubes
halite
halite
Halite.
The crystal system that halite crystals belong to is the Isometrics-Hexoctahedral system. One common use of halite is table salt.
Halite.
13 cubes 4,9,16,25,36,46,64,81,100,121,144,169,196
Cleavage
An example of rhombic cleavage would be siderite and rhodochrosite. Remember that this is basically a "partically squashed box." Essentially, the direction of deformation in a rhombohedron occurs in one of the three diagonals that run from one corner of the cube to the other. Calcite is not a particularly fabulous example of a rhombohedron, because it is considered to be cubed.