Streak is one of the most useful tests
A streak test can be helpful identifying any minerals!
hardness
luster
The mineral composition of a residual soil differs and can be determined by X-ray diffraction (XRD) tests
Yes. I'd recommend that you used every test available to you except for taste.
Its mineral composition.
That procedure tests the streak of the mineral. Oddly, the streak color of some minerals are different from the mineral's color.
A streak test can be helpful identifying any minerals!
hardness
Yes, you can usually identify the mineral salt by its taste. However, with most minerals one would apply a series of tests, eg hardness, flame test, colour, density, streak, shape in order to identify the mineral.
luster
Many igneous rocks can be identified by the position of their minerals.
These are not specific tests.
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Zinc is helpful for our bodies as it is in many vitamins we take.
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The mineral composition of a residual soil differs and can be determined by X-ray diffraction (XRD) tests