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Why can't a streak test be done on a mineral whose hardness is greater than 7?
Because the mineral is harder than the ceramic streak plate.
What is a piece of unglazed porcelain to test a mineral's streak called?
A streak plate
Does the streak test work with all minerals?
No it does not work with all minerals. For if you did not know streak plates have a hardness of 7 (maybe a little lower or higher) on the Mohs scale. Some minerals are harder than 7 though. If they are harder they will not work with the streak test. some examples are Diamond, topaz, and corundum.
What test is used to identify gold from pyrite?
When dragged across a streak plate, gold will leave a yellow streak, pyrite will leave a greenish-black streak. It is one way of differentiating gold from pyrite.
What is the streak of pyrite?
The streak should be olive greenish. My class did a streak test and found that out with pyrite. You want to do it? Get pyrite, a tile, and rub it across the tile. You should find out. But according to our results, pyrite had the olive green streak.
Why can't a streak test be done on a mineral whose hardness is greater than 7?
Because the mineral is harder than the ceramic streak plate.
How do you test out a streak?
by strecting it on a streak plate
How can the streaks test be helpful in identifying minerals?
It can be helpful because when you try to find Hemiatite it has various colors. But when you do a streak test the color always turns out red. So it depends on the kind of rock in the groups.
What does a mineral's streak tell and how do you test for it?
The streak of a mineral can distinguish between two samples that have the same color. The streak is often a different color. To test streak, use a streak plate. This is a piece of unglazed porcelain, like the back side of a tile.
What does a mineral and streak tell you and how do you test for it?
The streak of a mineral can distinguish between two samples that have the same color. The streak is often a different color. To test streak, use a streak plate. This is a piece of unglazed porcelain, like the back side of a tile.
What is a piece of unglazed porcelain to test a mineral's streak called?
A streak plate
What color streak does garnet leave?
Garnet leaves no color in a streak test .
What is the difference between a scratch test and a streak test?
a streak test is a test wheree you rub a mineral across a streak plate to see the color of its streak, which is a better indentifying factor of the mineral than the external color. A scratch test is when you scratch a mineral to find out its hardness on the Mohs Scale of Hardness. This is also another useful identifying factor
What color line when a mineral is rubbed on a surface?
It depends on what the rock is. That particular test is usually called a "streak test" or "porcelain streak test", if that's what you were looking for.
What is the definition of streak test?
it is tae
True or false the streak test is a test of mineral density?
no
What mineral test leaves a line of powder on a plate?
It is called the streak test. It can help identify the mineral by the color of the streak that is left.
