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Webster 1913 Edition


Epidote

Ep′i-dote

,
Noun.
[Gr. [GREEK] to give besides; [GREEK] over + [GREEK] to give: cf. F.
épidote
. So named from the
enlargement
of the base of the primary, in some of the secondary forms.]
(Min.)
A mineral, commonly of a yellowish green (pistachio) color, occurring granular, massive, columnar, and in monoclinic crystals. It is a silicate of alumina, lime, and oxide of iron, or manganese.
☞ The
Epidote group
includes ordinary epidote, zoisite or
lime epidote
, piedmontite or
manganese epidote
, allanite or
cerium epidote
.

Webster 1828 Edition


Epidote

EP'IDOTE

,
Noun.
[From Gr.; so named from the apparent enlargement of the base of the prism in one direction. It is called by Werner, pistazit, and by Hausmann, thallit.]
A mineral occurring in lamellar, granular or compact masses, in loose grains, or in prismatic crystals of six or eight sides, and sometimes ten or twelve. Its color is commonly some shade of green, yellowish, bluish or blackish green. It has two varieties, zoisite and aranaceous or granular epidote.
Epidote is granular or manganesian.

Definition 2024


épidote

épidote

See also: epidote

French

Noun

épidote m (plural épidotes)

  1. (mineralogy) epidote