CH 26 Flashcards
Naturally occurring, inorganic solid with a crystalline form.
Mineral
Color of a mineral in its powdered form.
Streak
Manner in which a mineral breaks along planes of weakness, creating sets of smooth parallel side; determined by the arrangement of atoms in the mineral’s structure.
Cleavage
Manner in which a mineral without cleavage will break, producing uneven, irregular surfaces.
Fracture
Measure of mineral’s resistance to scratching, described by Mohs scale of hardness.
Hardness
Molten rock material inside Earth.
Magma
What are the two most abundant elements in earth’s crust?
Silicon & Oxygen
A mineral is?
Naturally occurring, inorganic solid, & crystalline form
What does inorganic mean?
Materials that are nonliving
What does the arrangement of an atom and the bonds between them reflect about a mineral?
Mineral breaks, how hard it is, & what type of crystal shape it has
What are the ways to identify minerals?
Luster, streak, atomic arrangement, cleavage, fracture, hardness, & crystal shape
What are the two types of luster?
Metallic & Nonmetallic
How does metallic luster reflect light?
Very easily like a chrome/ metal surface
How does nonmetallic luster reflect light?
Doesn’t reflect easily, like glass
How do you preform a streak test?
Rubbing a mineral on an un-glazed porcelain tile
What are the two types of breakage that can happen to minerals?
Cleavage & Fracture
What is the name of the scale to measure the hardness of a mineral?
Mohs Scale of Hardness