streak plate

An unglazed piece of porcelain, such as a tile, used to test the characteristic streak of minerals by rubbing the mineral across the tile. Streak plates have a hardness of about 6.5 on the Mohs scale and cannot be used for testing harder minerals.
See streak.

QUIZZES

DO YOU KNOW THIS VOCABULARY FROM "THE HANDMAID'S TALE"?

"The Handmaid's Tale" was required reading for many of us in school. Everyone else has probably watched the very popular and addictive TV show. Do you remember this vocabulary from the book, and do you know what these terms mean?
Question 1 of 10
decorum
the act of or need for making up one's mind.
dignified propriety of behavior, speech, dress, etc.
a company of singers, especially an organized group employed in church service.
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Words nearby streak plate

strayhorn, strays, strayve, streak, streak culture, streak plate, streaking, streaky, stream, stream capture, stream of consciousness
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.