| "What is streak?" |
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| "A streak is the mark a mineral leaves when you rub it on an unglazed, porcelain tile. The tile - like some bathroom floor tiles - is known as a streak plate! The mark is actually a powder!" |
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| "Dynamite! But why bother?" |
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| "Sometimes the color of the streak is different from the color of the mineral - and that helps identify the mineral!" |
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| "Cool! Sounds simple!" |
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| "It is simple! But you have to be careful to test a fresh, unweathered (unaltered) part of the mineral! And some minerals, those that are harder than the streak plate, don't make a streak at all!" |
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| "This sounds like something I could do!" |
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| "OK!!" |
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