schorl


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schorl

 (shôrl)
n.
Tourmaline, especially black tourmaline.

[German Schörl.]

schor·la′ceous (shôr-lā′shəs) adj.

schorl

(ʃɔːl)
n
(Minerals) a black tourmaline consisting of a borosilicate of sodium, iron, and aluminium. Formula: NaFe3B3Al3(Al3Si6O27)(OH)4
[C18: from German Schörl, origin unknown]
schorˈlaceous adj
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.schorl - black tourmaline
tourmaline - a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones
References in periodicals archive ?
(22.) Schorl eld D, Shrestha R, Passey M, Earnest A, Fletchers.
[11] used electron paramagnetic resonance (EPR) to identify [Mn.sup.2+] in elbaite, [Fe.sup.3+] in dravite and schorl. They also found that the color and spectral characteristic of tourmaline that contains Fe did not change regularly with varied Fe contents.
Spectroscopic and structural characterization of schorl and beryl cyclosilicates.
and Liu, Y.: 2009, Schorl: A novel catalyst in mineral-catalyzed Fenton-like system for dyeing wastewater discoloration.
Gesner Id and Number Gesner Location Schorl GN1075 Connick's Mills, Waewig River Novaculite or Hone Campobello Slate GN 1253 Fossil Corallines Digdeguash River GN1363.GN1364 Sulpuret of copper GN1127 Digdeguash Sulphate of barytes GN1072 Chance Harbour Serpentine GN 1093 Musquash Spirifers and other Near Ocnabog Lake shells GN1400 Black oxide of Quaco manganese GN1007 Part of a large Grindstone Island fossil tree GN1551 Bitumea GN Westmorland Coal GN 722?
What interested Jean-Claude particularly were specimens of black tourmaline (schorl) of a type rarely seen--compact within, and with very few broken surfaces.
A iniciacao sexual e sexualidade de jovens em geral vem sendo investigadas a partir de um recorte de genero por inumeros autores, a exemplo de Borges e Schorl, (1,2), Feliciano (3), Heilborn (4) Leal e Knaut (5), Melo e Santana (6) e Rieth (7).
When in association with beryl and/or emerald, the tourmaline is dravite to uvite, otherwise it is schorl. The degree of alteration surrounding the veins varies from none to metre-wide horizons of rusty-weathering schist.
In the older classifications they were considered typical sodalithic pegmatites, with characteristic dominance of albite over microcline, lepidolite over other micas, spessartine over almandine and elbaite over schorl.
Grayish pale violet, just barely translucent and not highly lustrous, shot through with black acicular crystals of schorl, they are not much to look at, unfortunately, but they are apparently the only herderite crystals yet to see daylight.
Some exquisite specimens show sharp, complete fluorite octahedrons impaled by black, sleek, needle-like crystals of schorl (Gramaccioli, 1975).
Schorl is common within the quartz lenses, occurring as thin, elongate black crystals with high luster.