Rocks
A natural, solid mixture of minerals and grains
What is a rock?
A natural occurring solid found in nature, can contain crystals
What is a mineral?
Many minerals share this property.
What is color?
Non-Metallic Luster (Dark Color) --> Softer than Steel Nail --> No Cleavage --> Red-Brown Streak
What is hematite?
What is the rock cycle?
This key component of rocks can help us classify rocks
Rock that contains high concentrations of a desired substance, such as a metal
What is an ore?
The way a mineral reflects or absorbs light.
Metallic Luster --> Non-Magnetic --> Silver Color --> Harder than Fingernail --> Black Streak
What is galena?
A shift in the earth's crust occurs below ground.
What is tectonic forces?
A rock low in silica is has a dark color.
What is mafic?
Roads, building stones, ceramics, and fertilizers are all great examples of this
What is a non-metallic mineral resource?
A line of powder left behind on a streak plate tells a story.
What is streak?
Non-Metallic Luster (Dark Color) --> Harder than Steel Nail --> No Cleavage --> Dark to Light Green
What is olivine?
The process of runoff places sediment in new areas.
What is deposition?
Occasionally, rocks can have fossils.
What is a biochemical rock?
Natural gemstones are the opposite.
What is a synthetic gemstone?
What is chemical reactivity?
Non-Metallic Luster (Dark Color) --> Softer than Steel Nail --> No Cleavage --> Green Streak
What is malachite?
A change from an igneous rock to metamorphic rock is caused by two things.
What is heat and pressure?
Currents that exist in the mantle allow for magma to rise.
What is a convection current?
Hematite is an example of this.
In Tennessee, deep within the Smoky Mountains, are caves filled with minerals; you may not even need a flashlight.
What is fluorescence?
Non-Metallic Luster (Light Color) --> Softer than Steel Nail, but Harder than Fingernail --> Non-Cubic Cleavage --> Reacts with HCL
What is calcite?
The melting of a metamorphic rock results in a new substance.
What is magma/lava?