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- Dumortierite abstract "Dumortierite is a fibrous variably colored aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. Dumortierite crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in color from brown, blue, and green to more rare violet and pink. Substitution of iron and other tri-valent elements for aluminium result in the color variations. It has a Mohs hardness of 7 and a specific gravity of 3.3 to 3.4. Crystals show pleochroism from red to blue to violet. Dumortierite quartz is blue colored quartz containing abundant dumortierite inclusions.Dumortierite was first described in 1881 for an occurrence in Chaponost, in the Rhône-Alps of France and named for the French paleontologist Eugène Dumortier (1803–1873). It typically occurs in high temperature aluminium rich regional metamorphic rocks, those resulting from contact metamorphism and also in boron rich pegmatites. The most extensive investigation on dumortierite was done on samples from the high grade metamorphic Gfohl unit in Austria by Fuchs et al. (2005). It is used in the manufacture of high grade porcelain. It is sometimes mistaken for sodalite and has been used as imitation lapis lazuli.Sources of Dumortierite include Austria, Brazil, Canada, France, Italy, Madagascar, Namibia, Nevada, Norway, Poland, Russia and Sri Lanka.".
- Dumortierite colour Blue.
- Dumortierite thumbnail Dumortierite-ch23a.jpg?width=300.
- Dumortierite wikiPageExternalLink 173.
- Dumortierite wikiPageExternalLink dumortie.htm.
- Dumortierite wikiPageExternalLink AM11_93.pdf.
- Dumortierite wikiPageExternalLink AM11_96.pdf.
- Dumortierite wikiPageID "1895446".
- Dumortierite wikiPageLength "5493".
- Dumortierite wikiPageOutDegree "57".
- Dumortierite wikiPageRevisionID "601657505".
- Dumortierite wikiPageWikiLink Alpine_County,_California.
- Dumortierite wikiPageWikiLink Alps.
- Dumortierite wikiPageWikiLink Aluminium.
- Dumortierite wikiPageWikiLink Angstrom.
- Dumortierite wikiPageWikiLink Austria.
- Dumortierite wikiPageWikiLink Blue.
- Dumortierite wikiPageWikiLink Boron.
- Dumortierite wikiPageWikiLink Brazil.
- Dumortierite wikiPageWikiLink Brown.
- Dumortierite wikiPageWikiLink Canada.
- Dumortierite wikiPageWikiLink Category:Aluminium_minerals.
- Dumortierite wikiPageWikiLink Category:Borate_minerals.
- Dumortierite wikiPageWikiLink Category:Gemstones.
- Dumortierite wikiPageWikiLink Category:Nesosilicates.
- Dumortierite wikiPageWikiLink Category:Orthorhombic_minerals.
- Dumortierite wikiPageWikiLink Chaponost.
- Dumortierite wikiPageWikiLink Chemical_element.
- Dumortierite wikiPageWikiLink Contact_metamorphism.
- Dumortierite wikiPageWikiLink Crystal.
- Dumortierite wikiPageWikiLink Eugène_Dumortier.
- Dumortierite wikiPageWikiLink France.
- Dumortierite wikiPageWikiLink Gfohl_unit.
- Dumortierite wikiPageWikiLink Glass.
- Dumortierite wikiPageWikiLink Green.
- Dumortierite wikiPageWikiLink Iron.
- Dumortierite wikiPageWikiLink Italy.
- Dumortierite wikiPageWikiLink Lapis_lazuli.
- Dumortierite wikiPageWikiLink List_of_minerals.
- Dumortierite wikiPageWikiLink List_of_minerals_named_after_people.
- Dumortierite wikiPageWikiLink Madagascar.
- Dumortierite wikiPageWikiLink Metamorphic_rock.
- Dumortierite wikiPageWikiLink Metamorphic_rocks.
- Dumortierite wikiPageWikiLink Metamorphism.
- Dumortierite wikiPageWikiLink Mohs_hardness.
- Dumortierite wikiPageWikiLink Mohs_scale_of_mineral_hardness.
- Dumortierite wikiPageWikiLink Namibia.
- Dumortierite wikiPageWikiLink Nesosilicate.
- Dumortierite wikiPageWikiLink Nevada.
- Dumortierite wikiPageWikiLink Norway.
- Dumortierite wikiPageWikiLink Orthorhombic.
- Dumortierite wikiPageWikiLink Orthorhombic_crystal_system.
- Dumortierite wikiPageWikiLink Paleontologist.
- Dumortierite wikiPageWikiLink Paleontology.
- Dumortierite wikiPageWikiLink Pegmatite.
- Dumortierite wikiPageWikiLink Pink.
- Dumortierite wikiPageWikiLink Pleochroism.
- Dumortierite wikiPageWikiLink Poland.
- Dumortierite wikiPageWikiLink Porcelain.
- Dumortierite wikiPageWikiLink Prism_(geometry).
- Dumortierite wikiPageWikiLink Pseudomorph.
- Dumortierite wikiPageWikiLink Quartz.
- Dumortierite wikiPageWikiLink Rhône.
- Dumortierite wikiPageWikiLink Russia.
- Dumortierite wikiPageWikiLink Silicate_minerals.
- Dumortierite wikiPageWikiLink Sodalite.
- Dumortierite wikiPageWikiLink Specific_gravity.
- Dumortierite wikiPageWikiLink Sri_Lanka.
- Dumortierite wikiPageWikiLink Tourmaline.
- Dumortierite wikiPageWikiLink Violet_(color).
- Dumortierite wikiPageWikiLink Ångstrom.
- Dumortierite wikiPageWikiLinkText "Dumortierite".
- Dumortierite wikiPageWikiLinkText "dumortierite".
- Dumortierite 2v "Measured: 20° to 52°, Calculated: 30°".
- Dumortierite birefringence "δ = 0.027".
- Dumortierite caption "Dumortierite from Alpine County, California, USA, possibly pseudomorphic after tourmaline".
- Dumortierite category Nesosilicate.
- Dumortierite category Silicate_minerals.
- Dumortierite cleavage "Distinct on {100}, poor on {110}; parting on {001}".
- Dumortierite color "Blue, greenish-blue, violet-blue, pale blue, red".
- Dumortierite diaphaneity "Transparent to translucent".
- Dumortierite formula "Al7BO33O3 or Al6.5-7BO333".
- Dumortierite fracture "Fibrous".
- Dumortierite gravity "3.3".
- Dumortierite habit "As fibrous or columnar crystals; coarsely crystalline to intimate parallel aggregates of needles; massive".
- Dumortierite hasPhotoCollection Dumortierite.
- Dumortierite luster "Vitreous to dull".
- Dumortierite mohs "7".
- Dumortierite name "Dumortierite".
- Dumortierite opticalprop "Biaxial".
- Dumortierite pleochroism "Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue".
- Dumortierite refractive "nα = 1.659 - 1.678 nβ = 1.684 - 1.691 nγ = 1.686 - 1.692".
- Dumortierite streak "White".
- Dumortierite strunz "9".
- Dumortierite symmetry "Orthorhombic 2/m 2/m 2/m".
- Dumortierite system "Orthorhombic - Dipyramidal".
- Dumortierite twinning "Common on {110}, may produce trillings".
- Dumortierite unitCell "a = 11.77 Å, b = 20.21 Å,".
- Dumortierite unitCell "c = 4.71 Å; Z=4".
- Dumortierite wikiPageUsesTemplate Template:Cite_journal.