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What is the system used to compare the hardness of a mineral?
Minerals are compared in their ability to scratch the freshly cleaved surface of each other. Their ability to scratch other minerals has become one criterion used in the mineral's identification, as each mineral possesses a number assigned to its ability, as appears on the Mohs hardness scale, an enlightenment provided by the scientist Friedrich Mohs.See related question below.
Is the mohs hardness scale is it relative to a scale?
Mohs scale is a relative scale that defines the hardness of a mineral as its ability to produce a scratch on the surface of a reference mineral. The number for hardness assigned to the tested mineral is the number given to the hardest material that the mineral can scratch. The reference materials are 1) Talc 2) Gypsum 3) Calcite 4) Fluorite 5) Apatite 6) Orthoclase 7) Quartz 8) Topaz 9) Korundum 10) Diamond These materials can be tested more quantitatively for their hardness by standardized tests on how resistent they are against scratching. The mohs scale is thus more of a handy tool when one is out in the countryside and wants to have a rapid test if one found a quartz or a calcite.
What rock is composed by mineral calcite?
Gabro is made of calcite and sometimes seashells. sorry if this is not right but i only went on to get the answer.!.
How could you find out the relative hardness of three minerals if you had no tools and couldn't use your fingernail?
You could perform a scratch test by trying to scratch one mineral with another. Whichever mineral leaves a mark or scratch on the other is harder. By comparing the results of scratching each mineral with the others, you can determine their relative hardness.
What is the only mineral that can scratch corundum?
Diamond is the hardest mineral and is the only one that can scratch corundum. but in my opinion corundum will scratch corundum any mineral of the same hardness will scratch the other !
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.
How can you tell if one of the minerals in a rock is calcite?
Hydrochloric Acid- Calcite will fizz.
What mineral can scratch diamonds?
Diamonds can pretty much scratch any rocks and minerals.On something called, "Moh's Hardness Scale", the Diamond is the hardest one. So some examples of minerals it can scratch,~Corundum~Topaz~Quartz~Orthoclase~Apatite~Fluorite~Calcite~Gypsum~Talcand many, many more.Diamonds are one of the most hardest minerals.Hope I helped! (I'm learning this in science right now!)
What if your teacher gives you two clear minerals What quick test could you do in order to determine which is halite and which is calcite?
you can rub the 2 minerals on a hard surface and if one the minerals leave a color that one is clcite and the other one that does not leave a color is halcite.
What Minerals that contain an element combined with oxygen?
The class of minerals called carbonates contain carbon and oxygen. One of the most common carbonate minerals is calcium carbonate, commonly called calcite.
Both calcite and quartz can be found as clear crystals what tests can be used to correctly identify them?
Quartz would scratch the calcite. Calcite would not scratch the quartz. Calcite will react with dilute hydrochloric acid. Quartz will not. Calcite will exhibit double refraction. Quartz will not. If the crystal forms are intact, quartz crystal may appear six sided with pyramidal terminations. If they are of equal size, the quartz will be heavier.
What is one way to tell between two minerals which one is harder?
One way to tell the difference in hardness between two minerals is by conducting a scratch test. Using a mineral of known hardness scale, such as Mohs scale, you can scratch one mineral against the other. The mineral that scratches the other is the harder one.
Can copper scratch other rocks and minerals?
I would say not likely. Most metals are rather soft in their pure form. One of the most distinguishing characteristics about metals is that they are sectile, or easily cut with a knife. Silver has a hardness (on the Mohs scale) of 3. That is probably not going to scratch many other minerals.
If Calcite will scratch gypsum This is an example of what physical characteristics?
This is an example of hardness, which is a physical characteristic that describes the resistance of a mineral to being scratched. Hardness is determined by the ability of one mineral to scratch another.
How do you identify the property of a mineral but what does it mean where we say calcite has a hardness?
We use Mohs scale of mineral hardness to access the hardness of minerals, which calcite is one example.
What test could you perform to tell a quartzite rock from a marble rock?
One would be a scratch test. The quartzite is much harder than the marble. Another test would be the use of dilute hydrochloric acid, which will cause decomposition of the calcite minerals forming the marble.
What type of dissolved minerals glue particles into one mass?
The minerals that precipitate from fluids to cement particles together to form sedimentary rocks could be calcite, quartz, clay, or iron minerals.
