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What term is used to describe the shape of a mineral that has three directions of cleavage that intersect at 90 angles?
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What is the shape of a mineral that has three directions of cleavage that intersect at 90 degrees?
cube
What are the 7 properties mineralogist use to identify ninerals?
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.
What type of cleavage does feldspar have?
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.
Which mineral is a perfect square?
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.
What is the natural shape of a mineral?
The natural shape of a mineral would be its crystalline structure.
What is the shape of a mineral that has three directions of cleavage that intersect at 90 degrees?
cube
One way to test a mineral is to break it and see how many directions of what it has?
cleavage....
One way to test a mineral is to break it and see how many directions of what it what?
...directions of cleavage...
How does a mineral break into smooth pieces when a tool is used to break it?
A mineral can have varying numbers of cleavage planes, areas where there exists an inclination to cleave when struck or force is applied.. Most mineral crystals exhibit a preferred cleavage in certain directions, but may have cleavage planes in other directions.
What is the ability of a mineral to break along preferred directions called?
Cleavage
How many directions of cleavage do the feldspar minerals have?
Two directions of cleavage, at 90 degrees to each other.
A mineral that splits along a flat surface in 3 directions is?
Calcite exhibits cleavage in three directions.
What mineral has a cleavage that goes in 90 degree angles in three directions?
Rock salt.
What does the presence of cleavage planes within a mineral tell you about the chemical bonds that hold a mineral together?
minerals with cleavage break along smooth, flat surfaces in one or more directions.
What is a physical property used to describe how the surface of a mineral reflects the light?
cleavage
How are cleavage and fracture similar?
Cleavage is the tendency of a mineral to break along flat planar surfaces as determined by the structure of its crystal lattice. Fracture is the way a mineral breaks other than along a cleavage plane. They both describe a way a mineral can break.
How does cobaltite fracture?
The mineral cobaltite, CoAsS, has a brittle fracture, and exhibits good cleavage in three directions.
