epidote

ep·i·dote

(ĕp′ĭ-dōt′)

A lustrous yellow, green, or black mineral, Ca₂(Al, Fe)₃(SiO₄)₃OH, commonly found in metamorphic rock.

[French épidote, from Greek epididonai, to give in addition, increase (from the greater length of its crystals compared with those of related minerals) : epi-, epi- + didonai, to give; see dō- in Indo-European roots.]

ep′i·dot′ic (-dŏt′ĭk) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

epidote

(ˈɛpɪˌdəʊt)

(Minerals) a green mineral consisting of hydrated calcium iron aluminium silicate in monoclinic crystalline form: common in metamorphic rocks. Formula: Ca2(Al,Fe)3(SiO4)3(OH)

[C19: from French épidote, ultimately from Greek epididonai to increase, from didonai to give; so called because two sides of its crystal are longer than the other two sides]

epidotic adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ep•i•dote

(ˈɛp ɪˌdoʊt)

n.

a mineral, hydrous calcium aluminum iron silicate, Ca₂(Al, Fe)₃Si₃O₁₂(OH), occurring in green prismatic crystals or in masses.

[1800–10; < French épidote < Greek *epidotós given besides, increased]

ep`i•dot′ic (-ˈdɒt ɪk) adj.

Translations

épidote

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References in periodicals archive ?

Alteration is dominated by strong potassic alteration and pervasive silicification locally accompanied by albite, chlorite and epidote. Located 30 kilometres apart, the zones are spatially associated with two major subparallel structures suggesting significant deep-rooted regional-scale systems.

Azimut and SOQUEM near completion of $4 Million Gold-Copper Exploration Program over the Rex Trend in Nunavik, Northern Quebec

Malik Saleem said that Pakistan has enormous wealth of expensive gems such as ruby, emerald, tourmaline, garnet, topaz, peridot, aquamarine, spinel, pargasite, diopside, moonstone, pink topaz, sapphire, zircon, feldspar, agate, serpentine jade, epidote, pink beryl (morganite), purple beryl, sphene, zoisite, lapis lazuli, turquoise, and kunzite etc.

RCCI to hold 2nd Gems, Jewellery exhibition on August 23 to 25

Malik Shahid informed that Pakistan has enormous wealth of expensive gems such as ruby, emerald, tourmaline, garnet, topaz, peridot, aquamarine, spinel, pargasite, diopside, moonstone, pink topaz, sapphire, zircon, feldspar, agate, serpentine jade, epidote, pink beryl (morganite), purple beryl, sphene, zoisite, lapis lazuli, turquoise and kunzite etc and Pakistan could earn huge foreign exchange from exports of gems and jewelry.

RCCI striving to promote Gems and Jewelry sector to attract foreign investment: RCCI President

In the complex microprophries is very fine grained with orthoclase, perthite, quartz, biotite, magnetite, epidote as major minerals.

Evaluating the effect of grain size on mechanical parameters of rocks from different areas of Khyber Pakhtunkhwa, Pakistan

Speakers from Ministry of Commerce and TDAP informed the audience that Pakistan has enormous wealth of expensive gems such as ruby, emerald, tourmaline, garnet, topaz, peridot, aquamarine, spinel, pargasite, diopside, moonstone, pink topaz, sapphire, zircon, feldspar, agate, serpentine jade, epidote, pink beryl (morganite), purple beryl, sphene, zoisite, lapis lazuli, turquoise, and kunzite etc.

Three-day 'Gems and Jewellery' exhibition concludes

The alteration halos are composed of chlorite [+ or -] calcite [+ or -] epidote, in the diorites and quartz diorites of Segovia batholith and of muscovite [+ or -] illite + quartz + pyrite in the black shales of Segovia sedimentary rocks.

Microthermometry and Raman spectroscopy of fluid inclusions from El Vapor gold mineralizations, Colombia/Microtermometria y espectroscopia Raman de inclusiones fluidas de las mineralizaciones auriferas de El Vapor, Colombia

Accessory minerals: ilmenite, epidote, zircon and apatite occupy a small fraction of the volume.

COMPARISON OF PETROPHYSICAL PROPERTIES OF PREDOMINANT ROCKS FROM THE ARCHAEAN SECTION OF THE KOLA SUPERDEEP (SG-3)

Epidote (1.3-1.7%) wasasubhedral grains; optical studies identified both zoisite and clinozoisite.

SCIENTIFIC EXAMINATION OF MARBLE FRETWORK FROM JAHANGIR TOMB, LAHORE, PAKISTAN

The wide-range of gemstones including sapphires from Kashmir, emeralds from Swat, rubies from the northern areas and pink topazes from Katlang, Mardan, and good quality zircon, different varieties of quartz, aquamarine, tourmaline, sphene, spinel, zoisite apatite, epidote, morganite, garnet, scapolite, clino zoisite, xenotime, bastnaesite, peridot, nephrite, serpentine, red agate, diopside, pargasite, amethyst, scheelite, pollucite, chrome diopside and kunzite are found in mountainous belt from South Waziristan to Chitral, makes the country significant in the mineral world.