the hardness of the mineral.suppose if we scratch one mineral with other that means the 2nd one is harder.
The scratch test (technically the Mohs hardness test) is performed to determine a mineral's relative hardness.
sedimentary
It is called a streak and its purpose is to find the hardness of the mineral.
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.
hardness
The answer is quite complicated in fact I don't know the exact answer. What I really know is that a geologist will probably know the exact answer. Geologists study rocks and rocks have lots of minerals. You can search the answer as well by looking at geologist websites. If it doesn't work then I hope someone else can edit this answer.
You're testing it's hardness.
Mineral hardness is tested on a glass plate or usually a finger nail.
Bold
Minerals are tested for hardness by performing a scratch test. The unknown mineral is scratched with another object that the hardness is known. For example, a unknown mineral may be scratched with a piece of metal to compare the resistance.
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
The scratch test is used for identifying minerals.You simply get a hard, white surface, and scratch the mineral on it.
The Moh's scale is used to test the hardness of a mineral. It will be tested by a fingernail scratching it.
It is called a streak and its purpose is to find the hardness of the mineral.
Hardness
The scratch test, use a series of mineral with known hardness and scratch the mineral. From softest to hardest, and note where a scratch is made. You can also look for distinctive physical characteristics.
By undergoing scratch test.
Most likely you would be testing to see if the mineral was harder or softer than the nail.
In 1822 scientist Friedrich Mohs developed a scale to measure the hardness of minerals. A mineral will scratch other minerals softer than itself and will be scratched by minerals that are harder.