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A streak plate has a hardness of 7. If a mineral has a hardness of 4, then...
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
Which of the following is the formula for density?
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
Which of the following is NOT a characteristic that must be present for a substance to be considered a mineral?
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
The volume of a mineral is 10 mL and the mass is 30 g. What is the density of this mineral?
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
When using the Mohs Hardness Scale, what happens when a higher number rubs against a lower number?
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
How does a glassy igneous rock form?
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
Which of the following is the definition of luster?
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
Use the “Physical Properties of Some Common Minerals” Chart and the Mohs Hardness Scale to identify the mineral: brown mineral, leaves a brown streak, fractures irregularly, and be scratched by a steel file but not by a knife; has metallic luster
D = M/V
usually made up of 1 or more types of minerals
chromite
3 g/mL
the way light reflects off of a mineral
when lava cools extremely quickly (such as coming in contact with cold water or ice) and has no time to form crystals
the higher number scratches the lower number
it would leave a streak because it is softer than the streak plate
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