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perthite

American  
[pur-thahyt] / ˈpɜr θaɪt /

noun

Mineralogy.
  1. a variety of feldspar containing irregular bands of albite in microcline.


Other Word Forms

Derived Forms

Etymology

Origin of perthite

1832; named after Perth, Ontario, Canada; see -ite 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Potassium feldspar does not exhibit twinning or striations but may show linear features called exsolution lamellae, also known as perthitic lineation or simply perthite.

From Textbooks • Jan. 1, 2017

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