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Duftite

Duftite is a relatively common arsenate mineral with the formula CuPb(AsO4)(OH), related to conichalcite. It is green and often forms botryoidal aggregates. It is a member of the adelite-descloizite Group, Conichalcite-Duftite Series. Duftite and conichalcite specimens from Tsumeb are commonly zoned in color and composition. Microprobe analyses and X-ray…

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2V angle
Large
Birefringence
δ = 0.06
Category
Arsenate minerals
Cleavage
Indistinct
Color
Green, olive green or grey green. Generally zoned due to compositional variations.
Crystal class
Disphenoidal (222) H-M symbol: (2 2 2)

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Environment

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Duftite

Nodes26
Edges25
Triples35
Avg. degree1.92
Density0.076923
Components1

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Duftite

Top relations

related to Environment · 8
Duftite → Australia, Cap Garonne, Central Cobar Mines, France, It, Namibia, New South Wales, Tsumeb
2V angle · 1
Duftite → Large
Birefringence · 1
Duftite → δ = 0.06
Category · 1
Duftite → Arsenate minerals
Cleavage · 1
Duftite → Indistinct
Color · 1
Duftite → Green, olive green or grey green. Generally zoned due to compositional variations.
Crystal class · 1
Duftite → Disphenoidal (222) H-M symbol: (2 2 2)
Crystal habit · 1
Duftite → Tiny crystals elongated along with curved and rough faces, aggregated into crusts. Crystals may be pseudo-octahedral.
Crystal system · 1
Duftite → Orthorhombic
Dana classification · 1
Duftite → 41.5.1.4

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Important terminology

tsumeb namibia conichalcite mine oh group aso4 green color structure crystal crystals arsenate formula zoned otjikoto region references pb arsenates

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Duftite2V angleLarge1.00infobox
DuftiteBirefringenceδ = 0.061.00infobox
DuftiteCategoryArsenate minerals1.00infobox
DuftiteCleavageIndistinct1.00infobox
DuftiteColorGreen, olive green or grey green. Generally zoned due to compositional variations.1.00infobox
DuftiteCrystal classDisphenoidal (222) H-M symbol: (2 2 2)1.00infobox
DuftiteCrystal habitTiny crystals elongated along with curved and rough faces, aggregated into crusts. Crystals may be pseudo-octahedral.1.00infobox
DuftiteCrystal systemOrthorhombic1.00infobox
DuftiteDana classification41.5.1.41.00infobox
DuftiteDiaphaneityCrystals are transparent to translucent1.00infobox
DuftiteDispersionr > v, perceptible1.00infobox
DuftiteFormulaPbCuAsO4(OH)1.00infobox
DuftiteFormula mass426.67 g/mol1.00infobox
DuftiteFractureUneven to conchoidal1.00infobox
DuftiteIMA symbolDft1.00infobox
DuftiteLusterVitreous on fracture surfaces and dull on crystal faces1.00infobox
DuftiteMohs scale hardness4.51.00infobox
DuftiteOptical propertiesBiaxial (-), faint apple-green color (transmitted light)1.00infobox
DuftiteOther characteristicsDecrepitates on heating. Not radioactive.1.00infobox
DuftiteRefractive indexnα = 2.03–2.04, nβ = 2.06–2.08, nγ = 2.08–2.101.00infobox
DuftiteSolubilityReadily soluble in acids1.00infobox
DuftiteSpace groupP2121211.00infobox
DuftiteSpecific gravity6.4 (measured), 6.60 (calculated)1.00infobox
DuftiteStreakPale green or white1.00infobox
DuftiteStrunz classification8.BH.351.00infobox
DuftiteUnit cella = 7.768(1), b = 9.211(1) c = 5.999(1) [Å]; Z = 41.00infobox
Duftiteis arelatively common arsenate mineral with the formula CuPb0.90text

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