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Feldspar streak test

Feldspar streak test

C044/0270

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50.8 MB (5.2 MB compressed)

5164 x 3440 pixels

43.7 x 29.2 cm ⏐ 17.2 x 11.5 in (300dpi)

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Credit

TURTLE ROCK SCIENTIFIC / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY

Caption

Feldspar streak test. The streak test is used to determine the colour of a mineral in powdered form. It is done by scraping a specimen across a piece of unglazed porcelain known as a streak plate. Feldspar has a white streak. It is a tectosilicate mineral. Feldspar is defined to have hardness of 6 in the Mohs scale.

Release details

Model release not required. Property release not required.

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