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Goethite (/ˈɡɜːrtaɪt/, US also /ˈɡoʊθaɪt/) is a
mineral of the
diaspore group,
consisting of iron(III) oxide-hydroxide,
specifically the α-polymorph. It...
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within the
matrix that
control goethite crystal size and shape.
Because of this, the main
factor influencing goethite crystal growth is the
chitin fibers...
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different minerals (polymorphs)
denoted by the Gr****
letters α, β, γ and δ.
Goethite, α-FeO(OH), has been used as an
ochre pigment since prehistoric times....
- the form of
magnetite (Fe 3O 4, 72.4% Fe),
hematite (Fe 2O 3, 69.9% Fe),
goethite (FeO(OH), 62.9% Fe),
limonite (FeO(OH)·n(H2O), 55% Fe), or
siderite (FeCO3...
- case of
goethite,
dissolved lithium can be
taken up by
poorly crystallized goethite,
whereas little sorption occurs in well-crystallized
goethite. Additionally...
- iron(III)
oxide (nanophase Fe2O3) and the iron(III) oxide-hydroxide
mineral goethite. It can look like butterscotch;
other common surface colors include golden...
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Sphalerite 4 Iron 4–4.5
Ordinary steel 4.5
Colemanite 5
Apatite 5-5.5
Goethite 5.5 Gl**** 5.5–6 Opal 6
Rhodium 6-6.5
Rutile 6.5
Silicon 6.5–7
Jadeite 7...
- drab
colored ferric hydroxides.
These ferric hydroxides commonly include goethite (FeO-OH) and so-called "amorphous
ferric hydroxide" or limonite. Much of...
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processes in soil, and
along with
other iron
oxides or
oxyhydroxides such as
goethite,
which is
responsible for the red
color of many tropical, ancient, or otherwise...
- In general, bog ores
consist primarily of iron oxyhydroxides,
commonly goethite (FeO(OH)). Iron-bearing
groundwater typically emerges as a
spring and the...
