Chapter 26 Flashcards
A naturally occurring inorganic solid with a crystalline form
Mineral
The color of a minerals in powdered form
Streak
When a mineral breaks along preferred planes of weakness creating sets of smooth parallel sides
Cleavage
Minerals that break with irregular surface exhibit
Fracture
The physical property that measures a mineral’s 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 Earth’s crust?
Oxygen and Silicon
What does inorganic mean?
Materials that are not living
What does the arrangement of an atom and the bonds between them reflect about a minerals?
How it breaks
how hard it is
The type of crystal shape
What are all of the ways to identify minerals?
Luster,Streak,Hardness,Cleavage,Crystal shape,fracture,Atomic arrangements
What are the two types of luster?
Metallic and non metallic
How does metallic luster reflect light?
Very easily like crome on a car
How does nonmetallic luster reflect light?
Not easy shines like glass
how do you perform a streak test?
rub on a White 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 minerals?
Moh’s scale of Hardness
What is the number range on Mohs scale of Hardness?
1-10
How many different crystal shape systems are there?
6
Minerals grow from the?
insideout
What are the 3 ways minerals can form?
Hot water
Molten rock
Evaporation
What are the two mineral groups?
Silicates
non silicates
Which mineral group is the most abundant in Earth’s crust?
Silicates
what elements are Silicates made of?
Silicon
oxygen
Non Silicates do not contain what element?
Silicon
What mineral is used to make glass?
Quartz
Define rock?
A naturally formed mixture containing
- minerals
- rock fragments
- volcanic glass
How are rocks identified?
- Composition
2. Texture
what does the texture of a rock describe about rock?
- size
- shape
- arrangement of components.
Where do intrusive igneous rock form?
within Earth’s crust
What type of molten rock does intrusive igneous rock form from?
Magma
What is the name of the series that illustrates simultaneous crystallization of silicate minerals?
Bowen’s reactions series
What are the 3 types of magma?
Mafic
Intermediate
Felsic
What magma type has a low silica content?
Mafic
Which magma type has a high silica content?
felsic
What type of crust has an abundant amount of quartz?
continental crust
Which type of crust has little to no quartz?
Deep Continental crust
Oceanic crust
Which type of igneous rock has a coarse gained texture?
Intrusive igneous rock
Which type of igneous rock has a fine grained texture?
Extrusive igneous rock cools down fast
Do fine grained rocks cool slowly or quickly?
quickly
What are the two specific texture types for extrusive igneous rock?
- porphyritic
2. vesicular
Which texture is the type with holes left behind because of rapid cooling rates?
vesicular
Which texture is the type with different crustal sizes because of different cooling rates
Porphyritic
What types of rock has a vesicular texture?
Pumice
Define clasts?
Small rock and mineral fragments
What type of erosion are rocks on Earth’s surface exposed to?
- water
- wind
- other forces
What does it mean if clasts are being transported?
Move to another location
What does it mean if clasts are being deposited?
Being dropped off
Define pore space?
Space found between clast
Define compaction?
Clasts stay together due to weight on top of it
Define Cementation?
Minerals precipitate slowly out of a water solution and crystallize in the spaces between clasts in the process.
How are sedimentary rocks formed?
They get compasted
water flows though the pore spaces
Causing sementation
What is another name for clasts?
Detritus
What are sedimentary rocks called that are mostly made of clasts?
Detrital sedimentary rock
What is the decreasing size of clasts?
Gravel
sand
silt
clay/mud
What clast size would be deposited first?
gravel heavier material
What are 4 common detrital sedimentary rocks?
Conglomerate
sandstone
silt-stone
shale
How are chemical sedimentary rocks form?
Water that contains dissolved solids
mineral crystals precipitate out of a solution though evaporation
If sedimentary rocks contain remains of living organisms what are they called?
Biochemical sedimentary rocks
What are the 2 common biochemical sedimentary rocks?
Limestone
Coal
What are the 3 types of sedimentary rock?
Biochemical
chemical
detrital
Metamorphic rock is changed by a combination of with three things?
Heat
pressure
chemical reaction
What types of rock can be changed by metamorphism?
Igneous
sedimentary
metamorphic
What is it called when metamorphic changes in rocks occur over large areas?
Regional metamorphism
What is it called when metamorphic changes in rocks occur over small areas?
Contact metamorphism
When scale is compressed, which type of metamorphic rock is created?
slate
What are the two types of metamorphic textures?
Folaited texture
Nonfoliated texture
Define Folaited rocks
later and bands
Define nonfolaited rocks
random orienation
Metamorphic rocks are mainly classified based in which two things?
Texture
composition
Define Rock Cycle
Continual change to a rock type to another
Which types of rocks are part of the rock cycle?
Sedimentary
igneous
metamorphic
What are the three types of rocks?
Igneous
sedimentary
metamorphic
Which type of rock form from molten rock?
igneous
Which type of rock formed from clasts, precipitation, or compressed once living matter?
sedimentary
What types of rocks are formed from heat, pressure, and chemical reactions?
metamorphic
What can form from hot water, evaporation, or molten rock?
minerals