Mineral and Rocks Lab Midterm

What is this mineral

calcite

What is the hardness of Calcite?

3

What is a property of Calcite?

It effervesces (fizzes)

How many planes of cleavage does calcite have?

3 planes

What is this mineral?

Biotite

What is this Mineral?

Muscovite

How many planes of cleavage does Muscivite and biotite have?

1 Plane

What is the hardness of muscivite and biotite?

2-3

What is a use of muscivite and biotite?

Makeup

What is this Mineral?

Potassium Feldspar or Orthoclase

What is the hardness of Potassium Feldspar?

6

How many planes of cleaveage does Potassium Feldspar have?

2 Planes

What is this mineral?

Halite

How many planes of cleavage does Halite have?

3 planes

What is the hardness of halite?

2

What is a feature of Halite?

Salty taste

What is this mineral?

Quartz

How many planes of cleavage does quartz

None

What is the hardness of quartz

7

What are some of the color options for quartz?

Colorless, Smoky Gray, Milky White, Pink

What is this mineral?

Galena

What is the hardness of Galena?

2\.5

How many planes of cleavage does Galena have?

3 planes

What is a feature of Galena?

High Specific Gravity and Metalic

What is this mineral?

Fluorite

What is the hardness if fluorite?

4

How many planes of cleavage does fluorite have

4 planes

How do you tell the differnce between quartz and flourite?

Flourite is softer than quartz

What is this mineral?

Hematite

What is the Hardness of Hematite?

5-6.5

How many planes of cleavage does Hematite have?

None

What color streak does Hematite leave?

Reddish brown streak

What is this mineral?

Magnetite

What is the hardness of Magnetite?

6

How many planes of cleavege does Magnetite have?

None

What is a feature of Magnetite?

Magnetic

What color streak does magnetite have?

\n Black to Dark Gray

What is this rock?

Slate

What type of rock is slate?

Metamorphic

What is a feature of slate?

It’s Foliated

What are slates parent rocks?

__Shale__ or Mudstone

What is this rock?

Shale

What type of rock is shale?

Sedimentary

Is shale chemical or detrital?

detrital

How is shale made?

Compacted mud

What is this rock

Granite

What type of rock is granite

Igneous

What texture does granite have and what type of cooling caused it?

Course grained and slow cooling

What type of magma does granic come from?

Felsic Magma

What is this rock?

Rhyolite

What type of rock is Rhyolite?

Igneous

What is the texture does Rhyolite have and what type of cooling caused it?

Fine grained and Fast cooling

What type of magma is rhyolite from?

Felsic Magma

What type of rock is this

Basalt

What type of rock is Basalt

Igneous

What is the texture of basalt and what type of cooling cause it?

Fine grained and fast cooling

What type of magma does basalt come from?

Mafic Magma

What rock is this?

Gabbro

What type of rock is Gabbro?

Igneous

What is the texture of gabbro and what type of cooling caused it?

Cource grained and slow cooling

What type of magma does Gabbro come from?

Mafic Magma

What is this rock?

Obsidian

What type of rock is obsidian?

Igneous

How is obsidian made?

Magma hitting water

What type of fracturing happens to obsidian?

Conchoidal Fracture

What is this rock?

Peridotite

What type of rock is peridotite?

Igneous

What is peridotite mostly made of?

Olivine around 90%

What type of magma does peridotite come from?

Ultra Mafic

What is the texture of peridotite and how type of cooling happens?

Course Grained and slow cooling

What type of rock is this

Coquina

What type of rock is \`Coquina and which group is i\`t in?

Sedimentary and chemical

What is coquina mostly made of?

Mostly compacted shells

What is a feature of cocquina?

It effervese(fizzes)

What is this rock?

Fossiliferous Limestone

What type of rock is Fossiliferous Limestone and which group is it in?

Sedimentary and chemical

What are some feature of Fossiliferous Limestone?

It effervesces(fizzes) and has fossils in it

What type of rock is this?

Limestone

What type of rock is Limestone and which group is it from?

Sedimentary and Chemical

What is a feature of limestone?

It effervesces(fizzes)

What is the compostion of limestone?

Calcite

What is this rock?

Coal

What type of rock is coal and which group is it from?

Sedimentary and chemical

What enviroment does coal come from?

Swampy environment

What is the texture of coal?

Fine Grained

What is this rock

Conglomerate

What type of rock is conglomerate and which group is it from?

Sedimentary and detrital

What is a feature of conglomerate?

Made of small round crystals

What is conglomerate conposed of?

Quartz and Feldspar

What is this rock

Chert

What type of rock is chert and which group is it from?

Sedimentary and chemical

What is the texture of chert?

Smooth and microcrystalline

What type of crystal may be in the holes of chert?

Quartz

What is this rock

Rock Salt

What type of rock is rock salt and which group is it in?

Sedimentary and chemical

What is a feature of rock salt?

Salty taste

What is the composition of rock salt

Halite

What is this rock

Sandstone

What type of rock is sandstone and which group is it from?

Sedimentary and detrital

What is the grain size for sandstone?

2mm-1/16 mm and medium grained