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Torbernite

Torbernite, also known as chalcolite, is a relatively common mineral with the chemical formula Cu2·12H2O. It is a radioactive, hydrated green copper uranyl phosphate, found in granites and other uranium-bearing deposits as a secondary mineral. The chemical formula of torbernite is similar to that of autunite in which a Cu2+ cation replaces a Ca2+ cation.…

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Birefringence
δ = 0.009 – 0.010
Category
Phosphate minerals
Cleavage
Perfect; Distinct
Color
Emerald green to apple green
Crystal class
Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Crystal habit
Tabular crystals; Foliated to earthy masses and encrustations

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Overview

Etymology and history

Classification

Crystal structure

Metatorbernite

Properties

Occurrence and localities

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Map overview Semantic statistics

Torbernite

Nodes88
Edges87
Triples123
Avg. degree1.98
Density0.022727
Components1

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Torbernite

Top relations

related to Occurrence and localities · 42
Torbernite → Argentina, Australia, Austria, Bavarian Forest, Belgium, Black Forest, Bolivia, Brazil, Canada, Chile, China, Congo, Czech Republic, Democratic Republic, Fichtel Mountains, France, Further, Gabon, In Germany, Ireland
related to Crystal structure · 17
Torbernite → AsO4, Burns, Burns R1, Calos, Cu, H2O, I4/mmm, In, Kennard R1, Locock, Makarov, PO4, R1, Ross, Stergiou, Tobelko R1, UO2
related to history · 15
Torbernite → Abraham Gottlob Werner, Born, Born's, Georg Wagsfort Mine, Glimmer, Ignaz, In, It, Johanngeorgenstadt, Lythophylacium Bornianum, Ore Mountains, Sax, Saxony, Swedish, Torbern Olof Bergman
related to Classification · 10
Torbernite → According, Dana, EB, II, IMA, International Mineralogical Association, Nickel-Strunz, RO4, There, UO2
related to Metatorbernite · 8
Torbernite → Cu, H2O, It, Metatorbernite, P4/n, PO4, The, UO2
related to External links · 6
Torbernite → American-Mineralogist-Crystal-Structure-Database, Database, Metatorbernite, Raman, Retrieved, X-ray
Birefringence · 1
Torbernite → δ = 0.009 – 0.010
Category · 1
Torbernite → Phosphate minerals
Cleavage · 1
Torbernite → Perfect; Distinct
Color · 1
Torbernite → Emerald green to apple green

Important terminology Word statistics

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Important terminology

metatorbernite mineral formula uo2 autunite water cu po4 crystal also group uranyl chemical green radioactive zeunerite r1 sum phosphate structure

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
TorberniteBirefringenceδ = 0.009 – 0.0101.00infobox
TorberniteCategoryPhosphate minerals1.00infobox
TorberniteCleavagePerfect; Distinct1.00infobox
TorberniteColorEmerald green to apple green1.00infobox
TorberniteCrystal classDitetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)1.00infobox
TorberniteCrystal habitTabular crystals; Foliated to earthy masses and encrustations1.00infobox
TorberniteCrystal systemTetragonal1.00infobox
TorberniteDensitymeasured: 3.22; calculated: 3.264(1)1.00infobox
TorberniteDiaphaneityTransparent to subtranslucent1.00infobox
TorberniteFormulaCu[(UO2)(PO4)]2(H2O)121.00infobox
TorberniteFormula mass641 – 713 g/mol, depending the degree of water loss1.00infobox
TorberniteFractureBrittle1.00infobox
TorberniteFusibilityDecomposes before1.00infobox
TorberniteIMA symbolTor1.00infobox
TorberniteLusterVitreous; pearly1.00infobox
TorberniteMelting pointDecomposes before1.00infobox
TorberniteMohs scale hardness2–2.51.00infobox
TorberniteOptical propertiesUniaxial (−)1.00infobox
TorberniteOther characteristicsRadioactive and Poisonous1.00infobox
TorbernitePleochroismVisible1.00infobox
TorberniteRefractive indexnω = 1.590 – 1.592 nε = 1.581 – 1.5821.00infobox
TorberniteSpace groupI4/mmm1.00infobox
TorberniteStreakPale green1.00infobox
TorberniteStrunz classification8.EB.051.00infobox
TorberniteTwinningRare on1.00infobox

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