Minerals
Scale of Hardness
MISCELLANEOUS
Shining a Light on the Minerals
Streak and Intresting Facts
100
Wisconsin's state mineral is ______________.
galena
100
The hardness scale was established by the German mineralogist, Friedrich__________. The hardness scale he created placed ten common or well-known minerals on a scale from one to ten.
Mohs
100
True or False: Minerals are naturally occurring, solid substances with distinct physical and chemical properties.
True
100
Shiny and smooth = ???
glassy
100
The Streak of Hematite, one of several common iron minerals, is a dark gray to reddish color. The word hematite comes originally from the Greek word haima, which means __________.
blood
200
PbS is the chemical formula for the mineral galena. What does the Pb and the S stand for?
lead and sulfur
200
Hardness is the resistance to _____________________.
scratching
200
True or False: Minerals are made of one or two kinds of rocks.
False: Rocks are made from two or more minerals.
200
Like a candle = ?????
Dull - Waxy
200
The purpose of the streak test is to find out if a mineral has a ____________ that identifies it.
color
300
This yellow mineral smells like rotten eggs
sulfur
300
The softest mineral is ___________.
talc
300
Muscovite is a shiny mineral that can be pulled apart into thin sheets. For many years, it was used like a material we can easily get today. Name two ways people used this mineral.
* People used it to make windows. *Thin transparent sheets of mica called "isinglass" were used for peepholes in potbelly stoves and lanterns because they were less likely to shatter compared to glass when exposed to extreme temperature gradients.
300
Shining a light on a mineral will help you sort by ____________.
luster
300
The most common mineral in the earth's crust is _________________.
feldspar
400
_________________ is used is a mineral used in pencils.
Graphite
400
True or False : A penny is harder than your fingernail.
True Fingernail 2.5 Penny 3.5
400
Name the four defining characteristics of a gemstone.
A. rare B. beautiful C. durable D. portable
400
If a mineral is _____________ it transmits no light.
opaque
400
The process of breaking minerals into distinct shapes is called _____________________ .
cleavage
500
In “Lodestones Lead the Way,” you learned some facts about lodestones. One is that Lode means "to lead." Name two others.
* The Chinese were probably the first to use a compass to guide their ships. * Shepherds may have been the first to discover lodestone in the ground.
500
The hardest mineral is ___________________.
diamond
500
This mineral's softness and smell make it a good powder for diapers.
Talc
500
A mineral that is ___________ transmits some of the light.
translucent
500
Minerals usually have a distinct crystalline form. Pyrite and galena commonly display a cubic form with six distinct sides. Diamonds and fluorite commonly display crystalline forms with eight distinct sides. What is this three dimensional shape called? Bonus Point: What is a twelve sided shape called?
8 = Octahedral 12 = Dodecahedral
M
e
n
u