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Paradamite

Paradamite is a very rare zinc arsenate mineral with the chemical formula Zn2(AsO4)(OH). It is closely related to the better-known mineral adamite: both have the same chemical composition, but the atoms are arranged differently in the crystals. Because of this different structure, paradamite and adamite belong to different crystal systems (triclinic for…

Crystal structure, Physical and optical properties & Occurrence and paragenesis

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Crystal structure

Atomic scaleCationsHydroxylSpace groupUnit-cell
14 related topics

Physical and optical properties

Radiating aggregatesLustreResinousStreakCleavage
14 related topics

Occurrence and paragenesis

Oxidised zonesPolymetallicLimoniticGoethiticSmithsonite
10 related topics

Classification and related species

Atomic structurePhosphate groupsArsenate groupsChemical formulaCrystal structures
8 related topics

Key facts & relationships

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2V angle
Measured: 50°; calculated: 46°
Birefringence
0.054
Category
Arsenate minerals
Cleavage
Perfect on {010}
Color
Pale to lemon yellow, yellow-orange; rarely white
Crystal habit
Sheaf-like aggregates; blocky or lozenge-shaped crystals

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Overview

Discovery and naming

Crystal structure

Classification and related species

Physical and optical properties

Occurrence and paragenesis

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Map overview Semantic statistics

Paradamite

Nodes68
Edges67
Triples79
Avg. degree1.97
Density0.029412
Components1

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Paradamite

Top relations

related to Occurrence and paragenesis · 14
Paradamite → Ag, At, Because, Cu, Durango, Mexico, Namibia, Ojuela, Ojuela Mine, Outside Mexico, Pb, This, Tsumeb Mine, Zn
related to Discovery and naming · 12
Paradamite → Greek, Harvard University, Laboratory, London, National Museum, Natural History, Natural History Museum, Ojuela Mine, Smithsonian Institution, Switzer's, The, X-ray
related to Classification and related species · 8
Paradamite → AsO4, Because, Dana, In, OH, PO4, Strunz, Zn2
related to Crystal structure · 8
Paradamite → AsO4, At, In, OH, P1, The, These, X-ray
related to Physical and optical properties · 6
Paradamite → Cleavage, Crystals, Mohs, On, The, They
related to External links · 3
Paradamite → Mindat, RRUFF Project, WebmineralParadamite
is a · 2
Paradamite → biaxial, very rare zinc arsenate mineral with the chemical formula Zn2
2V angle · 1
Paradamite → Measured: 50°; calculated: 46°
Birefringence · 1
Paradamite → 0.054
Category · 1
Paradamite → Arsenate minerals

Important terminology Word statistics

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Important terminology

adamite mineral zinc arsenate structure triclinic ojuela minerals crystal group aso4 oh crystals mine classification mexico forms chemical orthorhombic polymetallic

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Paradamite2V angleMeasured: 50°; calculated: 46°1.00infobox
ParadamiteBirefringence0.0541.00infobox
ParadamiteCategoryArsenate minerals1.00infobox
ParadamiteCleavagePerfect on {010}1.00infobox
ParadamiteColorPale to lemon yellow, yellow-orange; rarely white1.00infobox
ParadamiteCrystal habitSheaf-like aggregates; blocky or lozenge-shaped crystals1.00infobox
ParadamiteCrystal systemTriclinic1.00infobox
ParadamiteDiaphaneityTransparent to translucent1.00infobox
ParadamiteDispersionRelatively strong1.00infobox
ParadamiteFormulaZn2(AsO4)(OH)1.00infobox
ParadamiteIMA symbolPrd1.00infobox
ParadamiteLusterVitreous to sub-vitreous, resinous1.00infobox
ParadamiteMohs scale hardness3.51.00infobox
ParadamiteOptical propertiesBiaxial (–)1.00infobox
ParadamiteRefractive indexnα = 1.726, nβ = 1.771, nγ = 1.7801.00infobox
ParadamiteSpace groupP11.00infobox
ParadamiteSpecific gravity4.55 (measured)1.00infobox
ParadamiteStreakWhite1.00infobox
ParadamiteStrunz classification8.BB.351.00infobox
ParadamiteTenacityBrittle1.00infobox
Paradamiteis avery rare zinc arsenate mineral with the chemical formula Zn20.90text
Paradamiteis abiaxial0.90text

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