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Sepiolite

Sepiolite, also known in English by the German loanword meerschaum (/ˈmɪərʃɔːm/ MEER-shawm, /-ʃəm/ -⁠shəm; .mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}German: ⓘ; meaning "sea foam"), is a soft white…

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2V angle
Measured: 20° to 70°, Calculated: 18°
Birefringence
δ = 0.010
Category
Phyllosilicate minerals
Color
Grayish white, white, white with a yellowish or reddish tinge; bluish green
Crystal class
Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Crystal habit
Compact nodular, earthy, clayey, massive; rarely fine fibrous along

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Sepiolite

Nodes93
Edges92
Triples70
Avg. degree1.98
Density0.021505
Components1

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Sepiolite

Top relations

related to Location · 31
Sepiolite → Additionally, Ankara, El Buur, Eskişehir, Euboea, France, From, Greece, Hrubschitz, In, In Somalia, Istanbul, It, Kemikçi Ocağı, Kromau, Madrid, Moravia, Morocco, Pennsylvania, Samos
related to Characteristics · 6
Sepiolite → Due, Mg4Si6O15, Mohs, OH, The, This
related to Other uses and substitutes · 5
Sepiolite → Djibouti, El Buur, In Somalia, It, The
related to External links · 4
Sepiolite → Archived, Chemical Safety, IMA Europe, Wayback MachineInternational Programme
2V angle · 1
Sepiolite → Measured: 20° to 70°, Calculated: 18°
Birefringence · 1
Sepiolite → δ = 0.010
Category · 1
Sepiolite → Phyllosilicate minerals
Color · 1
Sepiolite → Grayish white, white, white with a yellowish or reddish tinge; bluish green
Crystal class · 1
Sepiolite → Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Crystal habit · 1
Sepiolite → Compact nodular, earthy, clayey, massive; rarely fine fibrous along

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Important terminology

meerschaum mineral pipes material fibrous used also water may chemical minerals magnesium serpentine references porous deposits found sea clay palygorskite

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Sepiolite2V angleMeasured: 20° to 70°, Calculated: 18°1.00infobox
SepioliteBirefringenceδ = 0.0101.00infobox
SepioliteCategoryPhyllosilicate minerals1.00infobox
SepioliteColorGrayish white, white, white with a yellowish or reddish tinge; bluish green1.00infobox
SepioliteCrystal classDipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)1.00infobox
SepioliteCrystal habitCompact nodular, earthy, clayey, massive; rarely fine fibrous along1.00infobox
SepioliteCrystal systemOrthorhombic1.00infobox
SepioliteDana classification74.03.01b.01 Palygorskite-sepiolite group1.00infobox
SepioliteDiaphaneityOpaque1.00infobox
SepioliteFormulaMg4Si6O15(OH)2·6H2O1.00infobox
SepioliteIMA symbolSep1.00infobox
SepioliteLusterDull, earthy1.00infobox
SepioliteMohs scale hardness21.00infobox
SepioliteOptical propertiesBiaxial (-)1.00infobox
SepioliteRefractive indexnα = 1.520 nβ = 1.520 nγ = 1.5301.00infobox
SepioliteSpace groupPnna1.00infobox
SepioliteSpecific gravity2; dry porous masses float on water1.00infobox
SepioliteStreakWhite1.00infobox
SepioliteStrunz classification9.EE.251.00infobox
SepioliteUnit cella = 5.21 Å, b = 26.73 Å c = 13.5 Å; Z = 41.00infobox
Sepiolitecausesconsiderable geotechnical and geometallurgical difficulty for extracting the heavy minerals from the sepiolite-rich sands0.90text
Sepioliteis ahydrous magnesium silicate having the chemical formula Mg4Si6O150.90text

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