| 释义 |
epidote Min.|ˈɛpɪdəʊt|
[a. Fr. épidote, f. as if on Gr. *ἐπιδοτός, f. ἐπιδιδόναι to superadd, f. ἐπί upon + διδόναι to give.
First used in Fr. by Haüy, who explains it as meaning lit. ‘qui a reçu un accroissement’ (Minéralogie 1801. III. 112), and as denoting a great additional length in the base of the crystal as compared with that of certain allied minerals with which it was previously confused.]
A mineral common in many crystalline rocks, consisting largely of the silicate of iron and lime. It usually takes the form of flattened needles, and has a peculiar yellowish-green colour.
1808T. Allan Minerals 2 Akanticone or Thallite, Epidote. 1879Rutley Study Rocks x. 127 Epidote seldom gives direct evidence of its derivation from pyroxenic minerals.
Hence epiˈdotic a., pertaining to or resembling epidote, containing epidote. ˌepidoˈtiferous a., bearing or containing epidote.
1849Dana Geol. (1850) 565 The granitic and epidotic veins. 1862― Man. Geol. 76 An epidotic gneiss. 1884Harper's Mag. 159/2 Veins of..epidotiferous quartz. |