Lesson 3 Flashcards
It refers to the naturally occurring organic substance with a crystalline structure
Minerals
It is composed of repeating structural units composed of atoms of one or more element
Crystals
Eight physical properties of minerals
Color
Streak
Hardness
Crystal structure
Cleavage
Fracture
Luster
Density
It is easy to observe but it is not the most reliable reference for the identification of minerals
Color
A more consistent property or the color of serve when the mineral is finally powdered
Streak
It is defined as the minerals resistance to scratching
Hardness
What is the tool used to measure the hardness of the mineral
Mohs scale of hardness
Give me the top 10 most hardness scale
Talc
Gypsum
Calcite
Fluorite
Apatite
Feldspar
Quartz
Topaz
Corundum
Diamond
It refers to the geometric arrangement of atom in the crystalline form of minerals
Crystal structure
It is the tendency of the minerals to break along parallel layers
Cleavage
Cleavage in one direction two direction and three direction
Muscovite, feldspar, halite
Breaks in mineral are in irregular in shape
Fracture
The way a mineral reflects light
Luster
This property depends on the kind of atoms that comprise the mineral and how its crystal structure is packed
Density
It can be metallic pearly vitreous or earthy
Luster
Three types of rocks
Igneous sedimentary metamorphic
are formed from an aggregation of one or more minerals and other substances cohered into solid structure
Rocks
Are formed when molten rocks cool and harden
Igneous
⅔ of The earth’s crust is composed of
Igneous rocks
It is found from previously existing rocks that have been broken down into small particles or have been dissolved in solution
Sedimentary rocks
It is formed through compaction and cementation
Sedimentary rocks
These rocks are previously existing rocks that have been in contact with high temperature or pressure changing their chemical characteristics and turning them into different Rocks
Metamorphic rocks
