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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.
Wiki User
∙ 13y ago
Anonymous
Wiki User
∙ 13y agoDiamond will not leave a streak on a streak plate because diamond is harder than the unglazed porcelain streak plate. The streak is the color of the powdered mineral residue left on the streak plate surface when pulling a mineral across it. With a Mohs hardness of 10 (on a scale of 1-10) a streak could only be left on a diamond plated streak plate. Diamond streak is colorless.
Wiki User
∙ 8y agoDiamond will not leave a streak on a streak plate because diamond is harder than the unglazed porcelain streak plate. The streak is the color of the powdered mineral residue left on the streak plate surface when pulling a mineral across it. With a Mohs hardness of 10 (on a scale of 1-10) a streak could only be left on a diamond plated streak plate.
On the Mohs scale of hardness, diamond is the hardest natural mineral, ranking a 10 of 10 possible on the scale.
Any mineral rated above about a 7 will cut into the ceramic plate and leave no streak.
Scientifically, the streak of diamond is rated as 'colorless'.
Wiki User
∙ 9y agoDiamond will not leave a streak on a streak plate. This is because the diamond is harder than the streak plate. It may leave a scratch, though.
Gurtaran Grewal
Gurtaran Grewal
Diamond will not leave a streak on a streak plate. This is because the diamond is harder than the streak plate. It may leave a scratch, though.
Consuelo Hauck
Wiki User
∙ 11y agoit's so hard it doesn't have one
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What are 2 minerals that don't leave a streak on a streak plate?
A streak plate has hardness of 7 on the Mohs scale, so harder minerals will not leave a streak. Diamond has a hardness of 10 and corundum is 9 - so neither will leave a streak.
Why do some very hard minerals leave no streak?
Some minerals are harder than a streak plate and will therefore leave no streak or the powder of the ceramic streak plate.
Does a ruby have a streak?
No, rubies are too hard to leave a streak. They just scratch the plate.
Why could the streak of corundum be difficult to determine?
The mineral corundum, with a Mohs hardness of 9, will be harder than a ceramic streak plate and therefore leave no streak.
Why does pyrite and gold leave a streak but Quartz does not?
Quartz is harder than the streak plate, so instead of some of the quartz rubbing off and leaving a streak, when you rub quartz on the plate you're just scratching the plate itself.
What are 2 minerals that don't leave a streak on a streak plate?
A streak plate has hardness of 7 on the Mohs scale, so harder minerals will not leave a streak. Diamond has a hardness of 10 and corundum is 9 - so neither will leave a streak.
Which minerals on the Mohs scale will not leave a streak on the streak plate?
Topaz (8), corundum (9), and diamond (10).
What color does diamond streak?
Diamond does not streak. Anything with a Mohs hardness greater than about 7 will cut the ceramic plate used for the test. Diamond, the hardest naturally occurring substance, has a Mohs hardness of 10. (Nothing else in nature comes close.)
What you see in the streak of diamond?
It doesn't leave a streak.
Why do some very hard minerals leave no streak?
Some minerals are harder than a streak plate and will therefore leave no streak or the powder of the ceramic streak plate.
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.
What color does garnet leave on a streak plate?
Regardless of the color of the garnet specimen, it would leave a white streak.
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.
Does a ruby have a streak?
No, rubies are too hard to leave a streak. They just scratch the plate.
Which is a good way to tell the difference between hematite and galena?
galena leave dark grey streak on streak plate where as hematite leave cherish red streak.
If a mineral doesn't make a streak is it not a mineral?
Minerals with a hardness greater than around 7 on the Mohs hardness scale will not leave a streak on a standard unglazed porcelain streak plate. They will instead scratch and powder the streak plate.
