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Cookeite

Cookeite is a mineral species of the silicate group and the phyllosilicate subgroup, part of the chlorite family, with the formula LiAl4(Si3Al)O10(OH)8. This soft, low-density mineral of variable color has a crystalline structure made up of alternating layers LiAl2(OH)6 and Al2O4(OH)2Si8O12 having several polytypes. Cookeite is often found as a product…

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Birefringence
biaxial (+), 0,0170–0,0240 2V = 35 to 60°
Category
Phyllosilicate minerals
Cleavage
perfect over {001}
Color
white, green, brown, golden, pink
Crystal class
prismatic; C2 or Cc
Crystal system
monoclinic

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Overview

History

Physico-chemical properties

Mineral deposits

Mineral growth

Appendix

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Cookeite

Nodes106
Edges105
Triples46
Avg. degree1.98
Density0.018868
Components1

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Cookeite

Top relations

related to Chemical composition · 6
Cookeite → Impurities, It, LiAl4, O10, OH, Si3Al
related to Inventor and etymology · 6
Cookeite → American, Cambridge, George Jarvis Brush, Harvard University, Josiah Parsons Cooke, Massachusetts
related to Mineral growth · 5
Cookeite → Ardlethan, Australia, In, It, The
related to Crystallochemistry · 4
Cookeite → According, EC, IX, Strunz's
is a · 3
Cookeite → mineral species of the silicate group and the phyllosilicate subgroup, result of hydrothermal transport of magmatic fluids.Pressure seems to have the greatest influence on the degree of crystallinity and composition of the cookeite, soft mineral
related to Determination criteria · 2
Cookeite → It, Mohs
Birefringence · 1
Cookeite → biaxial (+), 0,0170–0,0240 2V = 35 to 60°
Category · 1
Cookeite → Phyllosilicate minerals
Cleavage · 1
Cookeite → perfect over {001}
Color · 1
Cookeite → white, green, brown, golden, pink

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Important terminology

layers oh two structure sites layer cell group mineral minerals al o' aluminum chemical composition si chlorite formula six-membered rings

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
CookeiteBirefringencebiaxial (+), 0,0170–0,0240 2V = 35 to 60°1.00infobox
CookeiteCategoryPhyllosilicate minerals1.00infobox
CookeiteCleavageperfect over {001}1.00infobox
CookeiteColorwhite, green, brown, golden, pink1.00infobox
CookeiteCrystal classprismatic; C2 or Cc1.00infobox
CookeiteCrystal systemmonoclinic1.00infobox
CookeiteDana classification71.04.01.021.00infobox
CookeiteDensityfrom 2.58 to 2.691.00infobox
CookeiteFormulaLiAl 4(Si 3Al)O 10(OH) 81.00infobox
CookeiteFractureflexible1.00infobox
CookeiteGroupChlorite group1.00infobox
CookeiteLusterpearly; silky1.00infobox
CookeitePleochroismx = y: pale green to pink, z: colorless to pale yellow1.00infobox
CookeiteRefractive indexα = 1,572–1,576, β = 1,579–1,584, γ = 1,589–1,61.00infobox
CookeiteStrunz classification09.EC.551.00infobox
CookeiteTenacity2,51.00infobox
CookeiteTwinningaround1.00infobox
CookeiteUltraviolet fluorescencecream yellow (SW)1.00infobox
Cookeiteis amineral species of the silicate group and the phyllosilicate subgroup0.90text
Cookeiteis asoft mineral0.90text
Cookeiteis aresult of hydrothermal transport of magmatic fluids.Pressure seems to have the greatest influence on the degree of crystallinity and composition of the cookeite0.90text

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