the color of a mineral powder left behind when a mineral is scraped across the surface; a method for classifying minerals
the property of a mineral that describes the way in which the light reflects from the surface. Major types of luster are metallic and nonmetallic.
the property of a mineral that describes its tendency to break along flat services.
the tendency of a mineral to break into irregular pieces.
a property of matter representing the mass per unit volume.
the resistance of a mineral or other material to being scratched.
color and luster
What two ways can the appearance of a mineral help to identify?
it may have tiny amounts of an element in it, it may be in contact with the atmosphere or water, and the crystals can have defects in the structure
Why can minerals be more than one color?
Each kind of mineral always breaks in the same way.
Why can the way a mineral breaks up help identify it?
Because there are no particular directions of weakness in its crystal structure.
Why do some minerals break by fracturing?
density and hardness
What are to properties of minerals that you could sense with your eyes closed
diamond is the hardest mineral, talc is the softest mineral, harder minerals have stronger bonds, and softer minerals have weaker bonds.
These are qualities of hardness...
Quartz would scratch calcite because it is harder than calcite.
Which mineral would scratch the other ports are calcite?
fluorescence, respond to magnets, are radioactive, and react to acids
What are four special properties of some minerals?