BELLWORK. Minerals - A naturally formed, inorganic solid that has a definite crystal line structure . Inorganic – was never living. Minerals of the earth’s crust. Chapter 13 – Section 1. ESSENTIAL QUESTION .
Chapter 13 – Section 1
Salt – Isometric (cubic)
Copper Sulfate - Triclinic
Chonchoidal fracture is a smooth curved fracture.
Knife Blade 5.5
Steel File 7+
Color, luster, hardness, streak (repeat)
Mineral I.D. isn’t for the meek (repeat)
Color isn’t a reliable sight (repeat)
Luster is how it reflects light (repeat)
Streak is the mineral in powdered form (repeat)
1 to 10 is hardness norm (repeat)
Can it scratch it? (repeat)
Fingernail 1, 2
Penny 3, 4
Knife blade 5, 6
Steel file 7, 8
It can scratch glass 9, 10
Chapter 13 – Section 3
Surface water and groundwater carry dissolved materials into lakes and seas where they crystallize on the bottom.
Evaporating Salt Water
When a body of salt water dries up, minerals are left behind and crystallize as the water evaporates.
Hot Water Solutions
Groundwater works its way downward and is heated by magma. It then reacts with minerals to form a hot liquid solution. Dissolved metals and other elements crystallize out o the hot fluid to form new minerals.
When changes in pressure, temperature, or chemical makeup alter a rock, metamorphism takes place.
As magma rises upward through the crust, it sometimes stops moving before it reaches the surface and cools slowly, forming millions of mineral crystals. Eventually the entire magma body solidifies to form a pluton.
As magma moves upward, it can form teardrop-shaped bodies called pegmatities.