Mineral Properties
True or False: The same mineral can be different colors
true
what are the 3 main rock types?
igneous, metamorphic, sedimentary
What kind of rocks forms from the cooling of magma underneath the surface?
intrusive igneous rock
what rock is formed by the cooling of magma or lava?
igneous rocks
what is an example of a gemstone?
diamond, sapphire, amethyst, ruby, peridot, emerald
Pearly, earthy, dull, metallic, and vitreous(glassy) are all words to describe what about a mineral?
luster
What kind of rock forms from the cooling of lava on the surface?
extrusive rocks
When a rock or mineral has larger grains, what does that tell us about the cooling rate?
cooled slower
what rock is formed under extreme temperatures and pressure?
metamorphic rock
what two elements need to be present for a mineral to be considered a silicate?
silicon, oxygen
what tool do I use if I want to find the color of a mineral in their powdered form?
streak plate
What property tells us a rock is a metamorphic rock?
foliation/banding
What type of rock has holes in it where gasses escaped during cooling?
extrusive igneous rock
What is 1 of the 3 processes that take place to turn sediments into a sedimentary rock?
deposition, compaction, cementation
What is an example of a non-silicate?
halite, calcite
what do we call it when a mineral breaks and forms uneven surfaces?
fracture
what process occurs when magma comes in contact with existing rock and creates a new rock?
contact metamorphism
what type of rock may a lot of pebbles bunched up and compacted together?
sedimentary rock
what process can create entire mountain ranges?
regional metamorphism
If my mineral cannot scratch glass and cannot be scratched by an iron nail, what is the hardness?
5
Rank these 4 substances in order of hardness from hardest to softest? iron nail, fingernail, glass, penny
glass, iron nail, penny, fingernail
What rock exhibits the properties of volcanic glass because no crystals are visible?
obsidian
What is the name of the rock have we looked at that has little holes in it where gasses have escaped?
pumice
what is the main difference between rocks and minerals?
what is it called when a mineral breaks into smooth, flat surfaces
cleavage