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Devilline

Devilline is a sulfate mineral with the chemical formula CaCu4(SO4)2(OH)6·3H2O. The name originates from the French chemist's name, Henri Etienne Sainte-Claire Deville (1818–1881).

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2V angle
42°
Birefringence
δ=0.075
Category
Sulfate minerals
Cleavage
Perfect (001) distinct (110) and (101)
Color
Green, blueish green; green in transmitted light
Crystal class
Prismatic (2/m) (same H-M symbol)

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Devilline

Nodes9
Edges8
Triples26
Avg. degree1.78
Density0.222222
Components1

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Devilline

Top relations

is a · 3
Devilline → anisotropic mineral, rare and unusual secondary mineral found in the oxidized portions of copper sulfide ore deposits, sulfate mineral with the chemical formula CaCu4
2V angle · 1
Devilline → 42°
Birefringence · 1
Devilline → δ=0.075
Category · 1
Devilline → Sulfate minerals
Cleavage · 1
Devilline → Perfect (001) distinct (110) and (101)
Color · 1
Devilline → Green, blueish green; green in transmitted light
Crystal class · 1
Devilline → Prismatic (2/m) (same H-M symbol)
Crystal habit · 1
Devilline → Prismatic, lamellar, platy pseudohexagonal crystals
Crystal system · 1
Devilline → Monoclinic
Density · 1
Devilline → Measured: 3.13 g/cm3 Calculated: 3.084 g/cm3

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Important terminology

mineral group monoclinic contains two belongs meaning relief found system sulfate formula cacu4 so4 oh angle prismatic crystal class space

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Devilline2V angle42°1.00infobox
DevillineBirefringenceδ=0.0751.00infobox
DevillineCategorySulfate minerals1.00infobox
DevillineCleavagePerfect (001) distinct (110) and (101)1.00infobox
DevillineColorGreen, blueish green; green in transmitted light1.00infobox
DevillineCrystal classPrismatic (2/m) (same H-M symbol)1.00infobox
DevillineCrystal habitPrismatic, lamellar, platy pseudohexagonal crystals1.00infobox
DevillineCrystal systemMonoclinic1.00infobox
DevillineDensityMeasured: 3.13 g/cm3 Calculated: 3.084 g/cm31.00infobox
DevillineFormulaCaCu4(SO4)2(OH)6·3(H2O)1.00infobox
DevillineIMA symbolDev1.00infobox
DevillineLusterVitreous, pearly1.00infobox
DevillineMohs scale hardness2.51.00infobox
DevillineOptical propertiesbiaxial negative1.00infobox
DevillinePleochroismVisible1.00infobox
DevillineRefractive indexnα=1.585, nβ=1.649, nγ=1.6601.00infobox
DevillineSolubilityInsoluble in water and concentrated H2SO4. Completely soluble in HNO3.1.00infobox
DevillineSpace groupP21/c1.00infobox
DevillineStreakLight green1.00infobox
DevillineStrunz classification7.DD.301.00infobox
DevillineTenacityBrittle1.00infobox
DevillineTwinningOn {010}1.00infobox
DevillineUnit cella = 20.870, b = 6.135 c = 22.91 [Å], β = 102.73° V = 2,861.23 Å31.00infobox
Devillineis asulfate mineral with the chemical formula CaCu40.90text
Devillineis aanisotropic mineral0.90text
Devillineis arare and unusual secondary mineral found in the oxidized portions of copper sulfide ore deposits0.90text

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