Diamond will scratch anything.
Diamond is the hardest mineral that can scratch a steel knife or window glass.
Quartz will scratch glass, as its hardness is usually around 7. Pyrite, on the other hand, has a hardness of 6 to 6.5, meaning it would not be able to scratch glass.
A few minerals that do not scratch glass come to mind . . . talc, asbestos, mica, for instance.
Diamond is the only mineral that can scratch glass but not leave a streak on a streak plate. Glass has a hardness of around 5.5 on the Mohs scale, while a streak plate typically has a hardness of around 6.5. Diamond, with a hardness of 10, is able to scratch glass but not the streak plate.
Between 3.5 and 5.5 on the Mohs scale of mineral hardness.
Mineral that can be scratched with a knife blade or a window glass is gypsum.
Diamond is the hardest mineral that can scratch a steel knife or window glass.
No, dolomite is softer than window glass and cannot scratch it. Dolomite has a Mohs hardness of 3.5-4, while window glass typically has a hardness around 5.5 on the Mohs scale.
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Window Glass
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The mineral that can scratch glass but can be scratched by a steel file is quartz. Quartz has a hardness of 7 on the Mohs scale, allowing it to scratch glass, which typically has a hardness of around 5.5. However, a steel file, which has a hardness of about 6.5 to 7, can scratch quartz.
Quartz will scratch glass, as its hardness is usually around 7. Pyrite, on the other hand, has a hardness of 6 to 6.5, meaning it would not be able to scratch glass.
A few minerals that do not scratch glass come to mind . . . talc, asbestos, mica, for instance.
Diamond is the only mineral that can scratch glass but not leave a streak on a streak plate. Glass has a hardness of around 5.5 on the Mohs scale, while a streak plate typically has a hardness of around 6.5. Diamond, with a hardness of 10, is able to scratch glass but not the streak plate.
Glass window use a single edge razor blade.