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Well attestedNamed from the place

cornwallite

noun · first attested 1846

Cornwall is one of the few places on earth that has lent its name to a mineral twice, in two languages.

An uncommon green copper arsenate mineral, Cu5(AsO4)2(OH)4, forming fibrous crusts.

Q23148·United Kingdom

50.3000°N -4.9000°W · Q23148

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Named from the place
Confidence
Well attestedThe place link is the standard scholarly account.
Attested
1846
Part of speech
noun

Explanations here are written for this atlas. Dictionary text is not copied; the sources are linked so the claim can be checked.

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    Q23148

  2. In English

    cornwallite

The entry

Frantisek Xaver Maximilian Zippe named cornwallite in 1846 for the English county whose copper mines produced it. In 1959 Claringbull, Hey and Davis described a triclinic dimorph from the same ground and called it cornubite, from Cornubia, the Latin name for Cornwall. A third Cornish namesake, kernowite, followed in 2020.

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