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What you are referring to is called a streak test. It's used as an aid to mineral identification. As a mineral is drawn over the unglazed tile surface, it is reduced to a streak of dust which reveals the true color of the mineral. If no color is revealed, the streak color is called white. An amethyst crystal which appears purplish will actually have a white streak, because the streak color of the constituent quartz is white. The purplish color of amethyst is due to other reasons.
What else can I help you with?
What do you find when you scratch a mineral over an unglazed tile that starts with a C?
colour?
What you find when you scratch mineral over an unglazed tile?
The answer will depend on the mineral. Some minerals, such as talc, are extremely soft and will not mark the tile.
What you find when you scratch a mineral over a unglazed tile it starts with a c?
ive got no idea that is y i came here stupid thing
What do you find when you scratch a mineral over an unglazed tite?
If you are my classmate ill be very surprised. the answer is streak the box is made wrong. PS: if you are my class mate i remind u that our teachers printer is BROKEN...
What you find when you scratch a mineral over a tile?
Usually the mineral deposits a certain color or colors that you wouldn't see otherwise.
What mineral property if you testing if you scratch a mineral on ceramic tile?
You're testing it's hardness.
What is the best method for finding the streak of a mineral?
The streak of a mineral can be determined by rubbing the mineral against an unglazed porcelain tile to produce a powder. The color of the powder left behind is the streak color of the mineral. It is important to use a streak plate or tile with a hardness greater than the mineral being tested to prevent contamination.
What is the difference between a minerals color and streak?
Color is what you observe when you look at a mineral. Streak is the color of the mineral when in a fine powder form. This can be observed by drawing a sample of the mineral over an unglazed porcelain tile and noting the color of the line left on the tile.
On a scale of 1-10 can a level 6 scratch a mineral over the level of six?
yes, though not easily. Moh's hardness scale is not very even- the difference between 5 and 6 is not that great and a sharp point of 5 can possibly scratch a rough surface of 6, the with damage to the 5. This is certainly true where a mineral is recorded as hardness 6, but has variable hardness, so the surface being scratched is actually lower than 6 - Disthene is a well-known example of a mineral with hardness that varies in different directions.
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.
Describe what would happen if you rubbed a mineral with a mohs hardness value of 7 against a mineral with a value of 5?
The mineral with a Mohs hardness value of 7 (such as quartz) would scratch the mineral with a value of 5 (such as apatite). This is because a mineral can scratch any other mineral with a lower Mohs hardness value.
What is a idiom for start over?
start from scratch
