Terms
This is the color of a mineral when it is a powder.
What is streak?
According to the provided MOHS scale, which mineral(s) would scratch or be scratched by all of the reference objects?
What are quartz, topaz, corundum, and diamond?
Which two elements must be present for a mineral to be classified as a silicate?
What are Si and O?
This is the hardest mineral on earth.
What is diamond?
The tendency of a mineral to break along parallel flat surfaces.
What is cleavage?
According to the provided MOHS scale, which mineral(s) on the table would be scratched by a fingernail?
What are talc and gypsum?
#1 on the reference page provides the chemical formula for the mineral orthoclase. List the type and number of each atom in the mineral.
What is K-1, Al-1, Si-3, O-8?
What is lava?
The bubbling of a mineral when it is exposed to acid.
What is effervescence?
According to the provided MOHS scale, which mineral(s) would be scratched by a fingernail but not a penny?
What is calcite?
Which of the minerals listed on #2 of the reference page are non silicate minerals?
What are a,c,d,e?
This is the term to describe a mineral that is not able to be seen through.
What is opaque?
A naturally occurring solid material from which a useful mineral can be extracted.
What is an ore?
According to the provided MOHS scale, which reference objects would not be able to scratch or be scratched by the mineral apatite?
What are the glass plate and streak plate?
This is the number of chemical formulas possible for the mineral listed in #3 on the reference page.
What is 3?
This is how many grams a 5 carat diamond would weigh.
What is 1 gram?
A mineral that is weakly attracted to a magnet and cannot become a magnet when exposed to one.
What is a paramagnetic mineral?
According to the provided MOHS scale, which mineral(s) would be able to scratch a glass plate, but not a streak plate?
What is orthoclase?
These are the possible chemical formulas for olivine.
What are:
Mg2SiO4
Fe2SiO4
Mn2SiO4
A necklace containing 200 grams of turquoise would have this many carats of the mineral.
What is 1000 carats?