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For the Majority of Minerals,the Streak Color Obtained When the Mineral

Question 23

Multiple Choice

For the majority of minerals,the streak color obtained when the mineral is scratched against a porcelain plate is ________.


A) only useful if the mineral is softer than porcelain
B) more variable than the color in a hand sample among crystals
C) not useful because the porcelain will often chemically react with the mineral
D) always dark brown or black

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