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Playfairite

Playfairite is a rare sulfosalt mineral with chemical formula Pb16Sb18S43 in the monoclinic crystal system, named after the Scottish scientist and mathematician John Playfair. It was discovered in 1966 by the Canadian mineralogist John Leslie Jambor. Lead gray to black in color, its luster is metallic. Playfairite shows strong reflection pleochroism from…

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Category
Sulfosalt minerals, Sulfides
Cleavage
Perfect
Color
Lead gray to black
Crystal system
Monoclinic Unknown space group
Dana classification
3.6.4.1
Formula
Pb16Sb18S43

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Overview

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Map overview Semantic statistics

Playfairite

Nodes24
Edges23
Triples14
Avg. degree1.92
Density0.083333
Components1

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Playfairite

Top relations

Category · 1
Playfairite → Sulfosalt minerals, Sulfides
Cleavage · 1
Playfairite → Perfect
Color · 1
Playfairite → Lead gray to black
Crystal system · 1
Playfairite → Monoclinic Unknown space group
Dana classification · 1
Playfairite → 3.6.4.1
Formula · 1
Playfairite → Pb16Sb18S43
IMA symbol · 1
Playfairite → Pyf
Luster · 1
Playfairite → Metallic
Mohs scale hardness · 1
Playfairite → 3.5-4
Pleochroism · 1
Playfairite → Strong reflection

Important terminology Word statistics

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Important terminology

gray monoclinic john county luster pleochroism also sulfosalt formula pb16sb18s43 crystal system lead black color metallic strong reflection hardness mohs

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
PlayfairiteCategorySulfosalt minerals, Sulfides1.00infobox
PlayfairiteCleavagePerfect1.00infobox
PlayfairiteColorLead gray to black1.00infobox
PlayfairiteCrystal systemMonoclinic Unknown space group1.00infobox
PlayfairiteDana classification3.6.4.11.00infobox
PlayfairiteFormulaPb16Sb18S431.00infobox
PlayfairiteIMA symbolPyf1.00infobox
PlayfairiteLusterMetallic1.00infobox
PlayfairiteMohs scale hardness3.5-41.00infobox
PlayfairitePleochroismStrong reflection1.00infobox
PlayfairiteSpecific gravity5.721.00infobox
PlayfairiteStreakBlack1.00infobox
PlayfairiteStrunz classification2.LB.30 (10 ed) 2/E.20-40 (8 ed)1.00infobox
Playfairiteis arare sulfosalt mineral with chemical formula Pb16Sb18S43 in the monoclinic crystal system0.90text

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