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Goethite

Goethite (/ˈɡɜːrtaɪt/, .mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}US also /ˈɡoʊθaɪt/) is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the α-polymorph. It is…

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Category
oxide minerals hydroxide subgroup
Cleavage
Perfect {010}
Color
Yellowish to reddish to dark brown or black
Crystal class
Dipyramidal (mmm) H–M symbol: (2/m 2/m 2/m)
Crystal habit
Radial acicular, mammillary, botryoidal, stalactitic, massive, as encrustation, as pseudomorph; may be banded or iridescent
Crystal system
Orthorhombic

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Goethite

Nodes72
Edges71
Triples73
Avg. degree1.97
Density0.027778
Components1

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Goethite

Top relations

related to Gallery · 14
Goethite → BrazilA, Colorado, Filón Sur Mine, Huelva, Iridescent, Lake George, Marquette County, Michigan, Minas Gerais, Negaunee, Park County, SpainGoethite, Tharsis, USGoethite
related to Distribution · 13
Goethite → Alabama, Colorado, Cuba, England, Georgia, It, Minnesota, Missouri, Significant, Tennessee, The, United States, Virginia
related to Formation · 10
Goethite → As, Because, Common, Fe2, Fe3, II, III, It, Nanoparticulate, The
related to Composition · 9
Goethite → Although, Earth's, FeO, Feroxyhyte, Goethite's, It, Mohs Scale, OH, The
related to Usage · 5
Goethite → Banded, Fine, Iron-rich, Its, Paleolithic
is a · 2
Goethite → common diagenetic iron oxyhydroxide in both marine and lake sediments, important component of ochre pigments
Category · 1
Goethite → oxide minerals hydroxide subgroup
Cleavage · 1
Goethite → Perfect {010}
Color · 1
Goethite → Yellowish to reddish to dark brown or black
Crystal class · 1
Goethite → Dipyramidal (mmm) H–M symbol: (2/m 2/m 2/m)

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Important terminology

iron found mineral also crystal use pigment minerals pseudomorph oxidation references conditions structure form ochre hydroxide brown iridescent common deposits

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
GoethiteCategoryoxide minerals hydroxide subgroup1.00infobox
GoethiteCleavagePerfect {010}1.00infobox
GoethiteColorYellowish to reddish to dark brown or black1.00infobox
GoethiteCrystal classDipyramidal (mmm) H–M symbol: (2/m 2/m 2/m)1.00infobox
GoethiteCrystal habitRadial acicular, mammillary, botryoidal, stalactitic, massive, as encrustation, as pseudomorph; may be banded or iridescent1.00infobox
GoethiteCrystal systemOrthorhombic1.00infobox
GoethiteFormulaα-FeO(OH)1.00infobox
GoethiteFractureUneven to splintery1.00infobox
GoethiteFusibilityFusible at 5–5.51.00infobox
GoethiteIMA symbolGth1.00infobox
GoethiteLusterAdamantine to dull1.00infobox
GoethiteMohs scale hardness5.0–5.51.00infobox
GoethiteOther characteristicsweakly magnetic1.00infobox
GoethiteRefractive indexOpaque to sub-translucent1.00infobox
GoethiteSolubilityHCl soluble1.00infobox
GoethiteSpace groupPbnm1.00infobox
GoethiteSpecific gravity3.3–4.31.00infobox
GoethiteStreakBrown, brownish yellow to orange yellow1.00infobox
GoethiteStrunz classification4.FD.101.00infobox
Goethiteis acommon diagenetic iron oxyhydroxide in both marine and lake sediments0.90text
Goethiteis aimportant component of ochre pigments0.90text

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