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5 why is Gypsum is a 2 on Mohs hardness scale while topaz is an 8 Can gypsum scratch topaz?
No, gypsum cannot scratch topaz. Minerals with a higher number on the Moh's Hardness Scale can scratch minerals that are lower-numbered, but lower numbers can't scratch higher numbers. A mineral would have to have a number higher than an 8 on the Moh's hardness scale in order to scratch topaz.
What minerals can scratch emeralds?
Emeralds have a hardness of around 7.5-8 on the Mohs scale, so minerals with a higher hardness like corundum (9) and diamond (10) can scratch emeralds. Minerals with a lower hardness, such as quartz (7) and feldspar (6), would not be able to scratch an emerald.
What chart can you use to compare the hardness of minerals?
You can use the Mohs hardness scale to compare the hardness of minerals. The scale ranges from 1 (softest - talc) to 10 (hardest - diamond), with each mineral being able to scratch minerals with lower hardness numbers but not those with higher numbers. This allows for a quick way to determine the relative hardness of different minerals.
What minerals can steel file scratch?
A steel file can scratch minerals with a hardness of 6.5 or lower on the Mohs scale. This includes minerals such as gypsum, calcite, and fluorite.
Can talc scratch over minerals?
Talc is the softest mineral on the Mohs scale with a hardness of 1, so it can be easily scratched by harder minerals. Talc can scratch over minerals with a lower hardness value, but it cannot scratch minerals that are harder than itself, such as quartz or diamond.
Can a mineral scratch any material harder than itself?
False. A mineral can only scratch itself or minerals equal in hardness or softer than it.
Can magnetite scratch other rocks and minerals?
Yes magnatite does and it can be scratched by a nail Jk!
What minerals can a steel knife scratch?
A steel knife can scratch minerals with a hardness lower than that of steel, such as gypsum, calcite, fluorite, and talc. Minerals like quartz, topaz, and corundum are harder than steel and cannot be easily scratched by a steel knife.
Is 7on MOHs hardness scale strong?
Yes, 7 on the Mohs hardness scale is considered strong. It indicates that the mineral can scratch minerals with a lower number but can be scratched by minerals with a higher number. Minerals like quartz and topaz have a hardness of 7 on the Mohs scale.
Can a hard mineral scratch a soft mineral?
Sure can. This is why we use " diamond tipped " bits. Diamond is one of the hardest minerals we know of besides Diorite. Both of these minerals are used in construction for " tipping " tools which means the tip of the tool, usually saw blades, are coated in these minerals so they can cut through other softer minerals with relative ease.
Can any other mineral scratch hematite?
I would guarantee that diamond would scratch it, and types of corundum like rubies, sapphires and raw corundum probably would, because it is 9 on the moh's scale of hardness. Quartz, emerald, agate and topaz would also scratch it.
Which mineral would a penny scratch?
A penny would scratch minerals with a lower hardness rating such as calcite, gypsum, or talc. Minerals like quartz or topaz would not be scratched by a penny because they are harder than the metal in a penny.
