Question

A geologist is comparing the properties of different minerals. He rubs each one on a piece of white tile and observes the color of he power that is left behind. What type of test did he perform?

Answer 1

Scratch Test is your answer

A scratch test is when one rubs a mineral on a piece of white tile, and sees what color is left behind. Also, the mineral that has the scratches is weaker than the material that leaves the scratch mark.

hope this helps

Answer 2

Answer:

The test is called as STREAK TEST.

Explanation:

One approach to distinguish the mineral is by playing out the streak test in which a bit of the mineral is scratched over a porcelain tile. The shade of the powder delivered by the mineral on the tile is utilized to distinguish the mineral and the powder shading is known as a streak.

The streak colour of some of the minerals are as follows:

• Chromite Dark brown

• Cuprite brownish Red

• Malachite  Green

• Talc   Pale green.