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efflorescence
(redirected from efflorescences)

    Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.03 sec.
efflorescence: see hydrate hydrate , chemical compound that contains water. A common hydrate is the familiar blue vitriol, a crystalline form of cupric sulfate. Chemically, it is cupric sulfate pentahydrate, CuSO4·5H2O.
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efflorescence
1. Chem Geology
a. the process of efflorescing
b. the powdery substance formed as a result of this process, esp on the surface of rocks
2. any skin rash or eruption
efflorescence [‚ef·lə′res·əns]
(botany)
The period or process of flowering.
(chemistry)
The property of hydrated crystals to lose water of hydration and crumble when exposed to air.
(materials)
A crust of salts, usually white, that forms on the surface of stone, brick, plaster, or mortar because of leaching of free alkalies from adjacent concrete or mortar.
(mineralogy)
A whitish powder, consisting of one or several minerals produced as an encrustation on the surface of a rock in an arid region. Also known as bloom.
efflorescence
An encrustation of soluble salts, commonly white, deposited on the surface of stone, brick, plaster, or mortar; usually caused by free alkalies leached from mortar or adjacent concrete as moisture moves through it.
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2005) also report salt efflorescences at the surface along major faults; in places, these efflorescences have a green colouration that was shown (by X-ray diffraction) to be related to the presence of atacamite and chalcantite.
Economic Geology Models 1. Geochemical exploration and metallogenic ... by Cameron, Eion M.; Leybourne, Matthew I.; Palacios, Carlos; Reich, Martin / Geoscience Canada
As the Cor-Ten steel ages, in fact, the efflorescences will fade to uniform brownish purple, as seen in Round, 1997, the only work exhibited that was not made this year.
Richard Serra: Gagosian Gallery by Richard, Frances / Artforum International
It was precisely his love for civilization--not just deep but wide, taking in efflorescences of which even the learned were largely ignorant--that fueled his hatred of, and determination to resist, its goose-stepping opposite.
Insolent humanism by Downing, Ben / New Criterion
 
 
 
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