yes, it does
yes, it does
If you could examine a mineral with a powerful microscope that reveals atoms and ions, you would see the arrangement of individual atoms within the crystal lattice structure of the mineral. This would give you insight into the bonding between atoms, the types of elements present, and the overall crystal morphology of the mineral at a microscopic level.
The unit cell is the smallest portion of a crystal lattice that reveals the three-dimensional pattern. It is a repeating structure that, when repeated in all directions, forms the entire crystal lattice.
William Henry Bragg in 1915. If a beam of x rays is passed through a crystal, it makes a pattern on a photographic plate. the pattern is callede crystallogram, it reveals the crystal`s internal structure ( the arrangement of the atoms each crystal has its owncrystallogram.
You're testing it's hardness.
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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.
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The streak of a mineral is found by rubbing the mineral against an unglazed porcelain plate, leaving a colored trail or powder behind. This powder reveals the true color of a mineral, which may be different from its external appearance due to impurities or weathering. Streak testing is a helpful method in mineral identification.
A streak test typically involves a piece of unglazed porcelain, known as a streak plate, and the mineral being tested. The mineral is scraped across the surface of the streak plate to produce a mark or streak of powdered material. This streak reveals the true color of the mineral in its powdered form, which can help in its identification.
The test is called a streak test and it leaves a powdered form of the mineral on the porcelain. The powdered mineral reveals the true color, of the mineral specimen, which may or may not match the color of the specimen.
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