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What is the powdered form of a mineral?
The powder indicates the true color of the mineral and is an aid in mineral identification. That can also be called a streak.
Why is color not the best indicator of aminerals true identity?
a mineral can have more than 1 color and more than 1 mineral can have the same color
What would you observe in a streak test?
You would observe the true color of a mineral as represented by the powder created by abrasion with the streak plate.
Why is streak more reliable than color when identifying a mineral?
The streak is the mineral in a powdered form from abrasion with the hard, slightly textured surface of an unglazed porcelain streak plate. The streak color may differ from the color observed in a specimen. Coloration of mineral specimens is sometimes due to impurities. In a powdered form, the impurities are not abundant enough to cause coloration in the streak, thus revealing the true color of the mineral. == ==
What valuable mineral starts with O?
Opal, (although it's not a true mineral).
Is the luster of a mineral described as metallic or nonmetallic True or false?
true
What is the powdered form of a mineral?
The powder indicates the true color of the mineral and is an aid in mineral identification. That can also be called a streak.
One way to help identify a mineral is to rub it against a piece of porcelain tile This procedure tests the of the mineral A streak B hardness C luster D cleavage?
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.
The true color of a mineral is called?
The color of the powdered form of a mineral is called
What is the powdered form of the mineral?
The powder indicates the true color of the mineral and is an aid in mineral identification. That can also be called a streak.
What is the color of a mineral in powdered form know as?
The powder indicates the true color of the mineral and mineral identification. That is also known as 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 is color not the best indicator of aminerals true identity?
a mineral can have more than 1 color and more than 1 mineral can have the same color
What color streak does fluorite have?
Fluorite's streak is white because that is the true color of the powdered form of the mineral. The impurities that cause color or tint in a mineral specimen are so insignificant in relation to the true mineral content that they are not visible when powdered.
Why do we use streak plates to test minerals?
They show you the true color of the mineral. Small impurities can cause big changes in the color of a mineral.
Why are streak plates used to test minerails?
Scratching a mineral across a streak plate will result in a streak which represents the true color of a mineral without impurities or inclusions that can influence a particular specimen's color. The mineral quartz can appear in a wide variety of colors, but the streak of any colored quartz specimen will still be white. The 'streak' color is one characteristic of a mineral which will aid in its identification.
Why is the streak a more reliable property than color in mineral identification?
The streak, or color of a mineral's powder, represents the true color of a mineral without the effects observed in a hand specimen due to impurities, inclusions or differences in light reflection.
