Goethite (/ˈɡɜːrtaɪt/, US also /ˈɡoʊθaɪt/) is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the α-polymorph. It...

within the matrix that control goethite crystal size and shape. Because of this, the main factor influencing goethite crystal growth is the chitin fibers...

different minerals (polymorphs) denoted by the Greek letters α, β, γ and δ. Goethite, α-FeO(OH), has been used as an ochre pigment since prehistoric times....

green or blue sheen. Oranges and browns are attributed to hematite or goethite. Because aventurine is a rock, its physical properties vary: its specific...

β-Fe2O3: beta phase γ-Fe2O3: gamma phase, maghemite ε-Fe2O3: epsilon phase goethite (α-FeOOH), akaganéite (β-FeOOH), lepidocrocite (γ-FeOOH), feroxyhyte (δ-FeOOH)...

produce ferric iron (Fe3+(aq)), which typically leads to hydroxides such as goethite (FeO•OH) under experimental conditions. While this reaction with water...

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...

Pseudomorph of goethite after pyrite...

minerals that form concretions include iron oxides or hydroxides (such as goethite and hematite), dolomite, siderite, ankerite, marcasite, barite, and gypsum...

oxides are limonite (which in its natural state has a yellowish color), and goethite. In addition to iron oxides, natural or raw sienna is also composed of...

drab colored ferric hydroxides. These ferric hydroxides commonly include goethite (FeO-OH) and so-called "amorphous ferric hydroxide" or limonite. Much of...

chrysoprase. Fire agate is a variety of chalcedony with inclusions of goethite or limonite causing an iridescent effect. It can display a wide range of...

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...

anhydrite, halite, polyhalite Brine precipitate: Fe-montmorillonite, goethite, hematite, siderite, rhodochrosite, pyrite, sphalerite, anhydrite. The...

cyanidation. The ore is located in the VMS Early Cretaceous Maimón Formation. Goethite enriched with gold and silver is found in the 30-meter thick oxide cap...

magnesium and silica. They consist largely of goethite and contain 1–2% nickel incorporated in goethite. Absence of the limonite zone in the ore deposits...

associated with a greater average particle size. Brown ochre, also FeO(OH), (goethite), is a partly hydrated iron oxide. Simiarly, lepidocrocite — γ-FeO(OH)...

atomic arrangement. Goethite-like structures are common because goethite is in the same space group as olivine. This allows for goethite to grow within the...

Australian deposits, chrysoprase occurs as veins and nodules with brown goethite and other iron oxides in the magnesite-rich saprolite below an iron and...

Schweitzer and her colleagues reported the presence of iron particles (goethite-aFeO(OH)) associated with soft tissues recovered from dinosaur fossils...

evolution and linguistics. He was fascinated by mineralogy, and the mineral goethite (iron oxide) is named after him. His non-fiction writings, most of which...

Goethite replacing pyrite cubes....

In general, bog ores consist primarily of iron oxyhydroxides, commonly goethite (FeO(OH)). Iron-bearing groundwater typically emerges as a spring and the...

including iron compounds such as iron oxide (ochre),: 204  hematite, and goethite, as well as manganese-containing pigments.: 208  Charcoal may also have...

boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite (Fe2O3), the aluminium clay mineral kaolinite (Al2Si2O5(OH)4)...

High-strength carbon nanotube film — 9,600 — Iron (pure mono-crystal) 3 7.874 Limpet Patella vulgata teeth (goethite whisker nanocomposite) 4,900 3,000–6,500...

brown" is composed of a mixture of kaolin, quartz, goethite, and hematite, with the hematite and goethite (generally 60% of the content) determining the colour...

effect is due to reflections from inclusions of red copper, hematite, or goethite, in the form of minute scales, which are hexagonal, rhombic, or irregular...

lindgrenite 5 Apatite, tooth enamel, zirconium, obsidian (volcanic glass) 5-5.5 Goethite 5.5 Cobalt, beryllium, glass, perovskite, chromite, bavenite, agrellite...

sulfidic copper ores, and is often found with azurite (Cu3(CO3)2(OH)2), goethite, and calcite. Except for its vibrant green color, the properties of malachite...