Ch 26 Flashcards
a naturally occurring inorganic solid with a crystalline form
Mineral
The color of a mineral in powered form
streak
When a mineral breaks along preferred planes of weakness creating smooth parallel sides
Cleavage
minerals that break unevenly have a
Fracture
The physical property that measures a minerals resistance to scratching
Hardness
molten rock material inside earth
magma
A mineral is ________ ________ _______
naturally occurring, inorganic solid, with a crystalline form
what are the two most abundant elements that make up earths crust?
Oxygen an silicone
what does inorganic mean?
Material that in non-living
What does arrangement of an atom and the bonds between them reflect about a mineral?
the way it breaks, how hard it is, and the crystal shape
What are the ways to identify mineral?
Luster, Fracture, cleavage, streak, Crystal shape, atomic arrangement, Hardness
What are two types of luster?
Metallic and non-metallic
How does metallic luster reflect light?
Very easily like meatal
How does nonmetallic luster reflect light?
appears like glass and/or earthy waxy
How do you perform a streak test?
rubbing a mineral on a unglazed white or black porcelain tile
What are the two types of breakage that can happen to minerals?
Cleavage and fracture
What is the name of the scale to measure the hardness of a mineral?
Mohs Scale of hardness
What is the number range on Mohs Scale to measure the hardness of a mineral?
1-10
How many different crystal shape systems are there?
Six
Minerals grow from the _________
inside out
What are three ways a mineral can form?
Molten rock, hot water, evaporation
What are the two mineral groups?
Silicates and non silicates
Which mineral group is the most abundant?
Silicate
What elements are silicates made of?
silicon and oxygen
Non silicates do not contain which element?
silicon
What is used to make glass?
Quartz
is naturally formed mixture containing minerals, rock fragments, and volcanic ash?
Rock
How are rocks defined?
Composition and texture
What does the texture of a rock describe about a rock?
Shape size and the arrangement of the rocks components
Where do intrusive igneous rocks form?
within the earths crust