variscite

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var·i·scite

(vâr′ĭ-sīt′, văr′-)

A rare, light to dark or bluish green, translucent mineral, Al(PO₄)·2H₂O, found in aluminum-rich rocks and sometimes used as a semiprecious stone.

[German Variscit, from Medieval Latin Variscia, ancient name for Vogtland, region of Germany where the mineral was discovered.]

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.

variscite

(ˈværɪˌsaɪt)

(Minerals) a green secondary mineral consisting of hydrated aluminium phosphate

[from Medieval Latin Variscia, the district of Vogtland in Saxony]

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

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mineral

References in periodicals archive ?

Veith JA, Sposito G (1977) Reactions of aluminosilicates, aluminum hydrous oxides, and aluminum oxide with o-phosphate: the formation of X-ray amorphous analogs of variscite and montebrasite.

Insights into [sup.33]phosphorus utilisation from Fe--and Al-hydroxides in Luvisol and Ferralsol subsoils

Basic features of the variscite extraction in Palazuelo de las Cuevas (Zamora)

RASGOS BASICOS DE LA EXTRACCION DE VARISCITA EN PALAZUELO DE LAS CUEVAS (ZAMORA)

We have implemented CGW based on Variscite System-on-Module (SoM) with Linux Debian operating system.

Round-trip delay estimation in OPC UA server-client communication channel

The gemological and mineral characteristics of variscite from Ma'anshan of Anhui Province.

Literature of interest

For example, the mineral variscite (AlP[O.sub.4*]2[H.sub.2]O) may precipitate when soil pH is below 5.5, anaerobic conditions are present, and aluminum and phosphate are available.

Fate and transport of phosphate from an onsite wastewater system in Beaufort County, North Carolina

In 1834, the Heidelberger-Mineralien Comptoir sold what would become the type specimen for variscite to August Breithaupt.

The Seidelberger Mineralien-Comptoir: one of Europe's earliest mineral dealerships

Inspired by the Southwest, The Suzanne ($40) features a subtle heel and multiple stones in finishes of turquoise, coral, variscite, opal, and onyx.

High in fashion, long on comfort

Lindsay (1979) described minerals such as variscite, strengite, and barrandite are insoluble at pH <2, but readily hydrolysed when the pH is increased, such as in the presence of NaOH.

Relationship between phosphorus fractions and properties of highly calcareous soils

Lindsay (1979) showed that at a pH greater than 6.5 the most stable P minerals were Ca phosphates and at a pH less than 6.5, Al and Fe phosphates such as variscite and strengite were most stable.

Application of phosphorus sorbing materials to streamside cattle loafing areas

Secondary hydrous oxide minerals such as stengite (Fe(P[O.sub.4]) x [H.sub.2]O) and variscite (Al(P[O.sub.4]) x 2[H.sub.2]O) are extremely insoluble P forms (Table 10-4).