Galena, i thinx
When a mineral breaks into cubes upon being struck with a rock hammer, the property being measured is its cleavage. Cleavage refers to the way a mineral breaks along specific planes of weakness, producing flat surfaces. In this case, the cubic breakage indicates that the mineral has a cubic cleavage, reflecting its internal crystalline structure.
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Quartz is a mineral that cannot split easily along a certain direction because it lacks cleavage. Instead, quartz breaks in a conchoidal fracture, producing curved, shell-like surfaces.
Halite forms cubes. It has excellent cleavage in 3 directions, which is why it breaks into cubes.
Galena breaks into tiny cubes due to its crystal structure, which is cubic. When it fractures, it tends to break along its natural cleavage planes, resulting in the formation of small cube-shaped fragments.
It wil break & produce fragments of d same shape as d parent material bcos it broke on a flat surface
A mineral that breaks into jagged pieces exhibits fracture.
When a mineral breaks along a weakly-bonded plane, it is called cleavage. Cleavage is a property that describes how a mineral breaks along its crystal structure.
Ice cubes are not naturally-occurring in the cube form, they are man-made. But ice itself is a mineral.
Halite.
galena, pyrite, fluorite, perovskite, or halite cubes
The way a mineral breaks is a better clue to its identity than are its color and luster.