Goethite was found by and named after the German polymath Johann Wolfgang von Goethe in 1806. This rock also has many uses as pigments like clay, crystals, and many many more. This can be found in the forms of concretions, stalactitic formations, oolites, reniform, or botryoidal accumulations.
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rdfs:comment
| - Goethite was found by and named after the German polymath Johann Wolfgang von Goethe in 1806. This rock also has many uses as pigments like clay, crystals, and many many more. This can be found in the forms of concretions, stalactitic formations, oolites, reniform, or botryoidal accumulations.
- It is an iron bearing oxide mineral. Goethite has been well known since prehistoric times for its use as a pigment. Evidence has been found of its use in paint pigment samples taken from caves.
- It is an iron oxyhydroxide. Goethite's hardness ranges from 5.0 to 5.5 on the Mohs Scale, and its specific gravity varies from 3.3 to 4.3. The mineral forms prismatic needle-like crystals, but is more typically massive. Feroxyhyte and lepidocrocite are both polymorphs of the iron oxyhydroxide FeO(OH). Although they have the same chemical formula as goethite they each have different crystalline structures making them distinct minerals.
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sameAs
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dcterms:subject
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cleave
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dbkwik:ceramica/pr...iPageUsesTemplate
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Category
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mohs
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Other
| - Becomes magnetic in reducing flame
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Gravity
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Name
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Type
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Caption
| - Goethite, Restormel Royal Iron Mine, Cornwall, England.
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dbkwik:geology/pro...iPageUsesTemplate
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SG
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streak
| - Brown, brownish yellow to orange yellow
- Brown, but can have yellow or orange tint
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formula
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System
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Hard
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strunz
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Color
| - Yellowish to reddish to dark brown
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fusibility
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RM
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cleavage
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Pro
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fracture
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refractive
| - Opaque to sub-translucent
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luster
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lust
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dbkwik:resource/blfO1QdfpifrV1mKZxvgZA==
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abstract
| - Goethite was found by and named after the German polymath Johann Wolfgang von Goethe in 1806. This rock also has many uses as pigments like clay, crystals, and many many more. This can be found in the forms of concretions, stalactitic formations, oolites, reniform, or botryoidal accumulations.
- It is an iron bearing oxide mineral. Goethite has been well known since prehistoric times for its use as a pigment. Evidence has been found of its use in paint pigment samples taken from caves.
- It is an iron oxyhydroxide. Goethite's hardness ranges from 5.0 to 5.5 on the Mohs Scale, and its specific gravity varies from 3.3 to 4.3. The mineral forms prismatic needle-like crystals, but is more typically massive. Feroxyhyte and lepidocrocite are both polymorphs of the iron oxyhydroxide FeO(OH). Although they have the same chemical formula as goethite they each have different crystalline structures making them distinct minerals.
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