Streak

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Description

1) A discoloration, mark or smear on a substrate.

2) In mineralogy, a streak test used to characterize minerals by their color. A stone is rubbed on an unglazed porcelain plate and the color of the residual powder or streak is observed. For example, a rock containing hematite may appear black but will always produce a red streak.

Synonyms and Related Terms

Strich (Deut.); strie (Fr.);

Sources Checked for Data in Record

  • Identification of Textile Materials, The Textile Institute, Manchester, England, 1985
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

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