pentagonite

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English

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Etymology

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From the fiveling twins that are common in this material.

Noun

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pentagonite (uncountable)

  1. (mineralogy) A silicate of calcium and vanadium found in basalts and tuffs

Further reading

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Italian

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Italian Wikipedia has an article on:
Wikipedia it

Noun

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pentagonite f (plural pentagoniti)

  1. (mineralogy) pentagonite