About: Goethite   Sponge Permalink

An Entity of Type : dbkwik:resource/6IIoeMLPkySiK--1vpcViQ==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

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.

AttributesValues
rdf:type
rdfs:label
  • Goethite
  • Goethite
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.
sameAs
dcterms:subject
cleave
  • Perfect
dbkwik:ceramica/pr...iPageUsesTemplate
Category
mohs
  • 5(xsd:integer)
Other
  • Becomes magnetic in reducing flame
Gravity
  • 33(xsd:integer)
Name
  • Goethite
  • Goethite
Type
  • Pigment
Caption
  • Goethite, Restormel Royal Iron Mine, Cornwall, England.
dbkwik:geology/pro...iPageUsesTemplate
SG
  • 3(xsd:double)
streak
  • Brown, brownish yellow to orange yellow
  • Brown, but can have yellow or orange tint
formula
  • α-
System
  • Orthorhombic 2/m2/m2/m
Hard
  • 5(xsd:integer)
strunz
  • 4(xsd:integer)
Color
  • Yellowish to reddish to dark brown
fusibility
  • Fusible at 5 - 5.5
RM
  • Mineral
cleavage
  • Perfect 010
Pro
  • Go-uh-thight
fracture
  • Uneven to splintery
refractive
  • Opaque to sub-translucent
luster
  • Adamantine to dull
lust
  • Adamantine/Dull
dbkwik:resource/blfO1QdfpifrV1mKZxvgZA==
  • None
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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