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Jarosite

Jarosite is a basic hydrous sulfate of potassium and ferric iron (Fe-III) with a chemical formula of KFe3(SO4)2(OH)6. This sulfate mineral is formed in ore deposits by the oxidation of iron sulfides. Jarosite is often produced as a byproduct during the purification and refining of zinc and is also commonly associated with acid mine drainage and acid…

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Solid solution series

BeudantiteCrandalliteFlorenciteSolid solutionKopec
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History

August BreithauptAlmeríaSpainCistusTemple of the Feathered Serpent
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Use in materials science

NaRbNH4AgTl
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Physical properties

TrigonalHardnessSpecific gravityLimoniteGoethite
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Birefringence
0.102 to 0.105
Category
Sulfate minerals
Cleavage
Distinct on {0001}
Color
Amber yellow or dark brown
Crystal class
Rhombohedral (3m) H-M symbol: (3m)
Crystal habit
Crystals are usually pseudocubic or tabular, also as granular crusts, nodules, fibrous masses or concretionary.

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Overview

Physical properties

Solid solution series

History

Use in materials science

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Map overview Semantic statistics

Jarosite

Nodes65
Edges64
Triples91
Avg. degree1.97
Density0.030769
Components1

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Jarosite

Top relations

related to history · 16
Jarosite → Almanzora, Almería, August Breithaupt, Barranco, Cistus, Cuevas, Feathered Serpent, Jaroso, Los Lobos, Mexico City, Mysterious, Sierra Almagrera, Spain, Spanish, Temple, The
related to Solid solution series · 14
Jarosite → AB3, Al, Czech Republic, Fe, Fe3, H2O, In, KAl3, Kopec, OH, SO4, The, TO4, XO4
related to Use in materials science · 13
Jarosite → Ag, AM3, Cr, Fe, H3O, In, M3, Na, NH4, OH, Rb, SO4, Tl
related to Mars exploration · 12
Jarosite → As, Because, Curiosity, Ferric, In May, JPL, Mars, Martian, Multiple, Opportunity, Spirit, These
related to Antarctica deep borehole · 7
Jarosite → Against, Antarctica, Geologists, However, Mars, On Earth, That
is a · 2
Jarosite → basic hydrous sulfate of potassium and ferric iron, iron analogue of the potassium aluminium sulfate
Birefringence · 1
Jarosite → 0.102 to 0.105
Category · 1
Jarosite → Sulfate minerals
Cleavage · 1
Jarosite → Distinct on {0001}
Color · 1
Jarosite → Amber yellow or dark brown

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Important terminology

sulfate also alunite iron oh mars so4 series formula spirit rover yellow oxidation minerals potassium deep may end ferric mineral

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
JarositeBirefringence0.102 to 0.1051.00infobox
JarositeCategorySulfate minerals1.00infobox
JarositeCleavageDistinct on {0001}1.00infobox
JarositeColorAmber yellow or dark brown1.00infobox
JarositeCrystal classRhombohedral (3m) H-M symbol: (3m)1.00infobox
JarositeCrystal habitCrystals are usually pseudocubic or tabular, also as granular crusts, nodules, fibrous masses or concretionary.1.00infobox
JarositeCrystal systemTrigonal1.00infobox
JarositeDana classification30.2.5.11.00infobox
JarositeDiaphaneityTransparent to translucent1.00infobox
JarositeFormulaKFe3(SO4)2(OH)61.00infobox
JarositeFormula mass500.8 g/mol1.00infobox
JarositeFractureUneven to conchoidal1.00infobox
JarositeIMA symbolJrs1.00infobox
JarositeLusterSubadamantine to vitreous, resinous on fractures1.00infobox
JarositeMohs scale hardness2.5–3.51.00infobox
JarositeOptical propertiesUniaxial (−), usually anomalously biaxial with very small 2V1.00infobox
JarositeOther characteristicsStrongly pyroelectric. Non-fluorescent. Barely detectable radioactivity1.00infobox
JarositePleochroismE colorless, very pale yellow, or pale greenish yellow, O deep golden yellow or reddish brown1.00infobox
JarositeRefractive indexnω = 1.815 to 1.820; nε = 1.713 to 1.7151.00infobox
JarositeSolubilityInsoluble in water. Soluble in HCl.1.00infobox
JarositeSpace groupR3m1.00infobox
JarositeSpecific gravity2.9 to 3.31.00infobox
JarositeStreaklight yellow1.00infobox
JarositeStrunz classification7.BC.101.00infobox
JarositeTenacityBrittle1.00infobox
JarositeUnit cella = 7.304 Å, c = 17.268 Å; Z = 31.00infobox
Jarositeis abasic hydrous sulfate of potassium and ferric iron0.90text
Jarositeis airon analogue of the potassium aluminium sulfate0.90text

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