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Troilite

Troilite (/ˈtrɔɪlaɪt/) is a rare iron sulfide mineral with the simple formula of FeS. It is the iron-rich endmember of the pyrrhotite group. Pyrrhotite has the formula Fe(1−x)S (x = 0 to 0.2) which is iron deficient. As troilite lacks the iron deficiency which gives pyrrhotite its characteristic magnetism, troilite is non-magnetic.

Standards, Occurrence & Discovery

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Alters to
Tarnishes on exposure to air
Category
Sulfide mineral
Cleavage
None
Color
Pale gray brown
Crystal class
Ditrigonal dipyramidal (6m2) H-M symbol: (6m2)
Crystal habit
Massive, granular; nodular; platey to tabular

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Occurrence

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Map overview Semantic statistics

Troilite

Nodes63
Edges62
Triples64
Avg. degree1.97
Density0.031746
Components1

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Troilite

Top relations

related to Occurrence · 28
Troilite → Alta, Australian, Bushveld Complex, California, Canyon Diablo, Canyon Diablo Troilite, CDT, Del Norte County, Earth, Earth's, Greenland, II, Ilimaussaq, In, It, Most, Mundrabilla, Nordfjellmark, Norway, One
related to Discovery · 11
Troilite → Albareto, Domenico Troili, FeS, FeS2, German, Gustav Rose, In, Italy, Modena, Samples, These
related to Structure · 6
Troilite → For, Its, NiAs-type, P-62c No, Pearson, Space
Alters to · 1
Troilite → Tarnishes on exposure to air
Category · 1
Troilite → Sulfide mineral
Cleavage · 1
Troilite → None
Color · 1
Troilite → Pale gray brown
Crystal class · 1
Troilite → Ditrigonal dipyramidal (6m2) H-M symbol: (6m2)
Crystal habit · 1
Troilite → Massive, granular; nodular; platey to tabular
Crystal system · 1
Troilite → Hexagonal

Important terminology Word statistics

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Important terminology

meteorite iron pyrrhotite meteorites mineral earth minerals moon mars sulfide formula ratio found daubréelite fes group space mundrabilla particular originating

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
TroiliteAlters toTarnishes on exposure to air1.00infobox
TroiliteCategorySulfide mineral1.00infobox
TroiliteCleavageNone1.00infobox
TroiliteColorPale gray brown1.00infobox
TroiliteCrystal classDitrigonal dipyramidal (6m2) H-M symbol: (6m2)1.00infobox
TroiliteCrystal habitMassive, granular; nodular; platey to tabular1.00infobox
TroiliteCrystal systemHexagonal1.00infobox
TroiliteDiaphaneityOpaque1.00infobox
TroiliteFormulaFeS1.00infobox
TroiliteFractureIrregular1.00infobox
TroiliteIMA symbolTro1.00infobox
TroiliteLusterMetallic1.00infobox
TroiliteMohs scale hardness3.5–4.01.00infobox
TroiliteSpace groupP62c1.00infobox
TroiliteSpecific gravity4.67–4.791.00infobox
TroiliteStreakGray black1.00infobox
TroiliteStrunz classification2.CC.101.00infobox
TroiliteUnit cella = 5.958, c = 11.74 [Å]; Z = 121.00infobox
Troiliteis amost common sulfide mineral at the lunar surface0.90text

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