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If you were to get a plate then scratch it with an obsidian what color is the streak that is left?
Wiki User
∙ 15y ago
Probably white because of the high silicon dioxide content.
Wiki User
∙ 15y ago
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Will diamond leave a streak on a streak plate?
Diamond will not leave a streak on a porcelain streak plate because diamond is harder than the streak plate. It will leave a scratch on the streak plate for the same reason.
Does a ruby have a streak?
No, rubies are too hard to leave a streak. They just scratch the plate.
What mineral will scratch glass but not a streak plate?
topaz
What is the color of the powder that a mineral leaves went is scratched across a special plate?
what is the color of the powder called that a mineral leaves when scratched across a special plate
What is the difference between streak and hardness?
A minerals hardness is its relative ability to scratch or be scratched by other minerals. Diamond, for instance, can scratch all other minerals because of its hardness. Streak is the color of the mineral when powdered. This is usually accomplished by the streak test (swiping the mineral across an unglazed porcelain surface) which reveals a mineral's streak color, which may differ from the color of the specimen being tested.
Can you show me a picture of a streak plate that has a streak from aquamarine on it?
I do not have a picture, but when you scratch aquamarine on a streak plate, the powder will be white colored.
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
Will diamond leave a streak on a streak plate?
Diamond will not leave a streak on a porcelain streak plate because diamond is harder than the streak plate. It will leave a scratch on the streak plate for the same reason.
What is the purpose of the plate?
A streak plate is used to determine the streak colour of a mineral. You take the mineral and scratch it against the streak plate, and it will create a coloured streak on the plate. The streak is not always the same colour as the mineral itself.
Can all minerals produce a streak on a porcelain plate?
Those minerals that are harder than the unglazed porcelain streak plate will scratch it rather than leave a streak.
What happens if you rub the mineral across a streak plate but the mineral does not leave a streak?
The lack of a streak would indicate that the mineral is harder than the streak plate, or the color of the streak is the same as the color of the streak plate.
Does a ruby have a streak?
No, rubies are too hard to leave a streak. They just scratch the plate.
Why doesn't the mineral topaz leave a streak on a streak plate?
It leaves a scratch instead of a streak because Topaz has a higher number on the Moh's scale compared to the streak plate.
What mineral will scratch glass but not a streak plate?
topaz
When you rub a pumice rock on a streak plate what color is left on the streak plate?
The streak test is really only useful in mineral identification, not for combinations of them as with pumice.
How do you know a mineral's streak?
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 streak plate?
A streak plate is a surface of unglazed ceramic, used to find the true color of a mineral specimen by drawing the specimen across it. The color of the resultant powder is referred to as the streak or streak color of a mineral.
