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greenstone

greenstone A low-grade, regional metamorphic rock containing actinolite, epidote, and albite, and lacking a cleavage. Greenstones form by metamorphism of basic igneous rocks, the actinolite and epidote components being derived from the ferromagnesium minerals present in the original rock. Actinolite and epidote impart a green colour to the massive rock, hence the name ‘greenstone’.

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"greenstone." A Dictionary of Earth Sciences. . Encyclopedia.com. 24 Oct. 2017 <http://www.encyclopedia.com>.

"greenstone." A Dictionary of Earth Sciences. . Encyclopedia.com. (October 24, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/greenstone

"greenstone." A Dictionary of Earth Sciences. . Retrieved October 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/greenstone

greenstone

green·stone / ˈgrēnˌstōn/ • n. Geol. a greenish igneous rock containing feldspar and hornblende. ∎  chiefly NZ a variety of nephrite.

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"greenstone." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 24 Oct. 2017 <http://www.encyclopedia.com>.

"greenstone." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (October 24, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/greenstone-0

"greenstone." The Oxford Pocket Dictionary of Current English. . Retrieved October 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/greenstone-0

greenstone

greenstoneflagstone, ragstone •Blackstone, jackstone •sandstone • capstone • hearthstone •headstone • gemstone • whetstone •hailstone • gravestone •freestone, keystone •greenstone • Wheatstone •Tinseltown • ringtone • pitchstone •millstone • whinstone • siltstone •holystone • semitone •stepping stone • coping stone •baritone • acetone • dulcitone •tritone • drystone • milestone •limestone •grindstone, rhinestone •cobblestone • gallstone • brownstone •lodestone • soapstone • duotone •microtone • bluestone • tombstone •moonstone • touchstone •bloodstone, mudstone •sunstone • ironstone • undertone •monotone • cornerstone •Silverstone • overtone •kerbstone (US curbstone) •turnstone •birthstone • flavone • endzone •cortisone • ozone

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"greenstone." Oxford Dictionary of Rhymes. . Encyclopedia.com. 24 Oct. 2017 <http://www.encyclopedia.com>.

"greenstone." Oxford Dictionary of Rhymes. . Encyclopedia.com. (October 24, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/greenstone

"greenstone." Oxford Dictionary of Rhymes. . Retrieved October 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/greenstone