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語源

From Ancient Greek φάσσα (phássa, “wood-pigeon”) + Ancient Greek ἀχάτης (akhátēs, “agate”); the mineral typically has a similar gray tone to that of wood pigeons.

名詞

phassachate (plural phassachates)

1. (obsolete, mineralogy) Lead-coloured agate.
   • 1748, John Hill, A General Natural History: […] A history of fossils., page 478:

     […] that theſe veins blended among the matter of the maſs they are uſually contained ſeparate in, would produce the other variety or plain Phaſſachates. That there are genuine maſſes of this ſtone in which the veins and common matter are so blended as to make it but one plain, simple-colour'd stone, I am convinced, by having ſeen ſuch; […]

   • 1804, James Wood, A Dictionary of the Holy Bible: Containing an Historical Account of the Person; a Geographical Account of the Places; a Literal, Critical, and Systematical Description of Other Objects ... Extracted Chiefly from Calmet, and Others, page 44:

     Agates are excellent for burnishing of gold, and sealing of wax. Some of the have a whitish ground, as the dendrachates or mochoastone, the phassachates and another sort: the hemachates, sardachates, &c. have a reddish ground: the cerachates and leonteseres have a yellowish ground; the japachates and some others have a greenish ground.

関連する語

• achate
• agate