cube
If a mineral breaks along flat or even surfaces, it displays perfect cleavage. This property indicates that the mineral's atomic structure allows for weak bonds in specific directions, causing it to split smoothly along those planes. Cleavage is an important characteristic in mineral identification, distinguishing it from other types of fracture that produce irregular surfaces.
Colour - however, this can be a very misleading property. Transparency - Is the crystal transparent, translucent or opaque Lustre - how shiney is the crystal is, there are various different types of lustre. Hardness - Expressed in a number between 0 and 10 on the Moh scale. Streak - the colour of the mineral in powdered form. Easily testable by scratching the mineral on a porcelain plate. Cleavage - Very characteristic to a mineral is what the preferred cleavage is. Mode of occurrence - Is it like needles, fibre, tabular, prismatic, etc.
Plagioclase feldspar is a non-metallic mineral. It has 2 cleavages at nearly right angles. It is also differentiated from potassium feldspar because it contains striations. Potassium feldspar has 2 cleavages at nearly right angles.
No mineral can be a perfect square: which is a two dimensional figure.No mineral can be a perfect square: which is a two dimensional figure.No mineral can be a perfect square: which is a two dimensional figure.No mineral can be a perfect square: which is a two dimensional figure.
The term used to describe the shape of a mineral with three directions of cleavage that intersect at 90 degrees is cubic or isometric cleavage. This means that the mineral can cleave in three directions at right angles to each other, resulting in cubic-shaped fragments.
cube
cleavage....
Two directions of cleavage, at 90 degrees to each other.
The ability of a mineral to break along preferred directions is called cleavage. Cleavage is a result of the arrangement of atoms within the mineral structure, which causes it to break in certain directions more easily than others.
Diamond has perfect cleavage in four directions, fluorite has perfect cleavage in four directions, sodalite has perfect cleavage in three directions, and sphalerite has perfect cleavage in six directions.
...directions of cleavage...
Calcite exhibits cleavage in three directions.
Cleavage in minerals can be identified by observing how the mineral breaks along certain planes or directions, resulting in smooth, flat surfaces. This cleavage is a result of the internal atomic structure of the mineral. By examining the shape and pattern of the breakage, one can determine the cleavage of a mineral.
Rock salt.
minerals with cleavage break along smooth, flat surfaces in one or more directions.
Cleavage is the property that examines a mineral's ability to break into even pieces along specific planes or directions. Minerals with good cleavage will break cleanly and smoothly along these planes, while minerals with poor cleavage will break in irregular or jagged shapes. Cleavage is determined by the internal atomic structure of a mineral.