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Digenite

Digenite is a copper sulfide mineral with formula: Cu9S5. Digenite is a black to dark blue opaque mineral that crystallizes with a trigonal–hexagonal scalenohedral structure. In habit it is usually massive, but does often show pseudo-cubic forms. It has poor to indistinct cleavage and a brittle fracture. It has a Mohs hardness of 2.5 to 3 and a specific…

Overview, Occurrence & Polymorphs of digenite

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Category
Sulfide mineral
Cleavage
{111} (observed in synthetic material)
Color
Blue to black
Crystal class
Hexagonal scalenohedral (3m) H-M symbol: (3 2/m)
Crystal habit
Pseudocubic crystals are rare, usually as intergrowths with other copper sulfides
Crystal system
Trigonal

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Overview

Occurrence

Polymorphs of digenite

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Digenite

Nodes26
Edges25
Triples40
Avg. degree1.92
Density0.076923
Components1

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Digenite

Top relations

related to Occurrence · 10
Digenite → Cu-Au, Cu-Fe-S, Deflector, Deflector West Cu-Au, Gullewa Greenstone Belt, However, In, It, Natural, Western Australia
related to Polymorphs of digenite · 6
Digenite → Cu2, Cu5FeS4, Cu7, Fm3m, High, There
is a · 3
Digenite → black to dark blue opaque mineral that crystallizes with a trigonal, copper sulfide mineral with formula, important constituent of the transitional Cu-Au ore
Category · 1
Digenite → Sulfide mineral
Cleavage · 1
Digenite → {111} (observed in synthetic material)
Color · 1
Digenite → Blue to black
Crystal class · 1
Digenite → Hexagonal scalenohedral (3m) H-M symbol: (3 2/m)
Crystal habit · 1
Digenite → Pseudocubic crystals are rare, usually as intergrowths with other copper sulfides
Crystal system · 1
Digenite → Trigonal
Dana classification · 1
Digenite → 02.04.07.03

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Important terminology

copper sulfide formula mineral chalcocite deposits group space trigonal usually covellite bornite high metastable primary type locality often supergene chalcopyrite

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
DigeniteCategorySulfide mineral1.00infobox
DigeniteCleavage{111} (observed in synthetic material)1.00infobox
DigeniteColorBlue to black1.00infobox
DigeniteCrystal classHexagonal scalenohedral (3m) H-M symbol: (3 2/m)1.00infobox
DigeniteCrystal habitPseudocubic crystals are rare, usually as intergrowths with other copper sulfides1.00infobox
DigeniteCrystal systemTrigonal1.00infobox
DigeniteDana classification02.04.07.031.00infobox
DigeniteDiaphaneityOpaque1.00infobox
DigeniteFormulaCu9S51.00infobox
DigeniteFormula mass146.45 g/mol1.00infobox
DigeniteFractureConchoidal1.00infobox
DigeniteIMA symbolDg1.00infobox
DigeniteLusterSubmetallic to metallic1.00infobox
DigeniteMohs scale hardness2.5 to 31.00infobox
DigeniteOptical propertiesReflectivity: 21.6 at 540 nm1.00infobox
DigeniteOther characteristicsDistinctly blue in polished sections1.00infobox
DigeniteSpace groupR3m1.00infobox
DigeniteSpecific gravity5.5 to 5.7 observed, 5.628 calculated1.00infobox
DigeniteStreakBlack1.00infobox
DigeniteStrunz classification2.BA.05e1.00infobox
DigeniteTenacityBrittle1.00infobox
Digeniteis acopper sulfide mineral with formula0.90text
Digeniteis ablack to dark blue opaque mineral that crystallizes with a trigonal0.90text
Digeniteis aimportant constituent of the transitional Cu-Au ore0.90text

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