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Legrandite

Legrandite is a rare zinc arsenate mineral, Zn2(AsO4)(OH)·(H2O).

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2V angle
Measured: 50°
Birefringence
δ = 0.060
Category
Arsenate minerals
Cleavage
Imperfect, poor one {100}
Color
Bright yellow, wax-yellow, colorless
Crystal class
Prismatic (2/m) (same H-M symbol)

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Map overview Semantic statistics

Legrandite

Nodes26
Edges25
Triples24
Avg. degree1.92
Density0.076923
Components1

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Legrandite

Top relations

2V angle · 1
Legrandite → Measured: 50°
Birefringence · 1
Legrandite → δ = 0.060
Category · 1
Legrandite → Arsenate minerals
Cleavage · 1
Legrandite → Imperfect, poor one {100}
Color · 1
Legrandite → Bright yellow, wax-yellow, colorless
Crystal class · 1
Legrandite → Prismatic (2/m) (same H-M symbol)
Crystal habit · 1
Legrandite → Crystalline, prismatic, typically in sprays or sheaflike aggregates
Crystal system · 1
Legrandite → Monoclinic
Diaphaneity · 1
Legrandite → Transparent to translucent
Formula · 1
Legrandite → Zn2(AsO4)(OH)·(H2O)

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Important terminology

zinc mineral mine mexico arsenate zn2 aso4 oh h2o minerals references oxidized granite pegmatite adamite paradamite köttigite scorodite smithsonite leiteite

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Legrandite2V angleMeasured: 50°1.00infobox
LegranditeBirefringenceδ = 0.0601.00infobox
LegranditeCategoryArsenate minerals1.00infobox
LegranditeCleavageImperfect, poor one {100}1.00infobox
LegranditeColorBright yellow, wax-yellow, colorless1.00infobox
LegranditeCrystal classPrismatic (2/m) (same H-M symbol)1.00infobox
LegranditeCrystal habitCrystalline, prismatic, typically in sprays or sheaflike aggregates1.00infobox
LegranditeCrystal systemMonoclinic1.00infobox
LegranditeDiaphaneityTransparent to translucent1.00infobox
LegranditeFormulaZn2(AsO4)(OH)·(H2O)1.00infobox
LegranditeFractureConchoidal1.00infobox
LegranditeIMA symbolLeg1.00infobox
LegranditeLusterVitreous1.00infobox
LegranditeMohs scale hardness4.5–51.00infobox
LegranditeOptical propertiesBiaxial (+)1.00infobox
LegranditePleochroismX = Y = Colorless to yellow Z = Yellow1.00infobox
LegranditeRefractive indexnα = 1.675 – 1.702 nβ = 1.690 – 1.709 nγ = 1.735 – 1.7401.00infobox
LegranditeSpace groupP21/c1.00infobox
LegranditeSpecific gravity3.98–4.011.00infobox
LegranditeStreakWhite1.00infobox
LegranditeStrunz classification8.DC.101.00infobox
LegranditeTenacityBrittle1.00infobox
LegranditeUnit cella = 12.805(2), b = 7.933(1) c = 10.215(2) [Å]; β = 104.23°; Z = 81.00infobox
Legranditeis arare zinc arsenate mineral0.90text

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