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Did the streak test work better on identification of some minerals than it did for others?
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Why isn't streak used to identify every mineral?
cause some minerals have the same color streak as others
What are the 5 method of identification for minerals based on their properties?
1. COLOR 2. HARDNESS. 3. LUSTER. 4. CLEAVAGE. 5. STREAK.
Why do you need to know hardness and streak to identify minerals?
Any identifying characteristics help when you are dealing with an unknown mineral. You have to use all of the clues at your disposal to make a proper identification. Streak and hardness are 2 important tests.
What is the difference between color and streak in minerals?
Color is the observable color of a mineral specimen in natural light. Streak is the color of a mineral when powdered. The color of a specific mineral specimen may be different than its streak color. Because many impurities can alter the color of a mineral, but not the streak, streak is a more accurate predictor in mineral identification.
Can all minerals produce a streak on a porcelain plate?
Those minerals that are harder than the unglazed porcelain streak plate will scratch it rather than leave a streak.
Why is streak an important physical property of minerals?
A streak test is used to determine a minerals streak color. This can help in the identification of minerals.
What is the Streak of Slate?
Streak color is used as an indicator in mineral identification. Slate is a rock composed of various types of minerals.
What is the streak color of a granite rock?
Most of the constituent minerals of granite would have a white streak, although streak is not normally used as an identification aid in rocks because they are composed of a variety of minerals that may have different streak colors.
What test is used to identify a minerals color?
A streak test is used to determine a minerals streak color. This can help in with the identification of minerals. A streak test is performed by rubbing the mineral on an unglazed ceraminc tile, then observing the color of the streak which is left behind. All minerals do not leave streaks. Harder minerals will not streak, but this can also be used as a tool for identifying the mineral, if you are familiar with the hardness scale.
What tool is used to test a minerals color?
A white tile plate is used. Some minerals leave a streak; others don't.
How is a minterals streak determinded?
Streak color is determined by scraping the mineral across a a streak plate, (which is made of unglazed porcelain), and then observing the color of the streak, which is left on the plate. Note that some minerals do not leave a streak, as they are too hard. Thus, it is important to learn other identification methods, to use in conjunction with streak color, in order to identify minerals.
Does gabbro have a streak?
Only minerals have a streak, not rocks. The constituent minerals of a gabbro will all have a streak.
Why isn't streak used to identify every mineral?
cause some minerals have the same color streak as others
What are the 5 method of identification for minerals based on their properties?
1. COLOR 2. HARDNESS. 3. LUSTER. 4. CLEAVAGE. 5. STREAK.
Why Is Streak A Useful Property For Identifying Minerals?
The streak of a mineral is much more accurate in identifying a mineral than color. The streak of a mineral can distinguish minerals with metallic and non-metallic luster. For example, metallic minerals generally have a dark streak whereas non-metallic luster minerals often have a light colored streak.
Why can't color alone be used identify most minerals?
Many minerals have similar color, and mineral color can be altered by trace amounts of impurities or by weathering. A better indicator would be the mineral's streak, which is the color of the mineral when powdered, although this characteristic can't be used alone in mineral identification.
Which property is more realiable in mineral Identification Color or streak?
streak
