- Yellow ochreGoethite is the source for the pigment known as yellow ochre; it is also the primary mineral in some important iron ores, such as those in the Alsace-Lorraine basin in France. Other important goethite deposits are found in the southern Appalachians, U.S.; Brazil; South Africa; Russia; and Australia.www.britannica.com/science/goethite
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Goethite is an iron oxyhydroxide containing ferric iron. It is the main component of rust and bog iron ore. 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 ("needle ironstone" ) but is more typically massive. Feroxyhyte … 展开
Goethite is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the α-polymorph. It is found in soil and other low-temperature environments such as sediment. Goethite has been well known … 展开
Goethite is found all over the planet, usually in the form of concretions, stalactitic formations, oolites (a form consisting of tiny round … 展开
• Iridescent goethite, Filón Sur Mine, Tharsis, Huelva, Spain
• Goethite from Minas Gerais, Brazil
• A sharp, disc-shaped calcite has here been completely replaced … 展开• Spencer, Leonard James (1911). "Göthite" . Encyclopædia Britannica (11th ed.). 展开
Goethite often forms through the weathering of other iron-rich minerals, and thus is a common component of soils, concentrated in 展开
Its main modern use is as an iron ore, being referred to as brown iron ore. Goethite is an important component of ochre pigments, and has been heat-treated for use as a red pigment since Paleolithic times. Iron-rich lateritic soils that have developed over 展开
CC-BY-SA 许可证中的维基百科文本 Goethite : Properties, Formation, Uses and Mining …
2023年8月29日 · Goethite. Goethite typically crystallizes in the orthorhombic crystal system, forming prismatic or needle-like crystals, as well as in massive, botryoidal (globular), stalactitic, or earthy forms. Its color can range from …
Goethite - an overview | ScienceDirect Topics
2020年7月17日 · Goethite is the most common of the iron oxyhydroxides and is antiferromagnetic with a disordering (Néel) temperature of about 120°C (Hedley, 1971). Goethite has weak …
Goethite | Iron Oxide, Hematite, Limonite | Britannica
Goethite is the source for the pigment known as yellow ochre; it is also the primary mineral in some important iron ores, such as those in the Alsace-Lorraine basin in France. Other important goethite deposits are found in the southern …
Goethite: Mineral information, data and localities. - mindat.org
The most common simple iron oxide mineral. A weathering product of numerous iron-bearing minerals. Goethite may crystallize from a precursor - a not approved species called 'proto …
Goethite - Sandatlas
Goethite is a common weathering product of iron-bearing minerals like magnetite, pyrite and siderite. It is an oxyhydroxide or iron — FeO (OH). The most characteristic feature of this mineral is brown to yellowish color. It may …
Goethite - an overview | ScienceDirect Topics
Goethite (α -FeOOH) Due to its high stability, goethite is the most ubiquitous Fe oxide mineral in soils. In the absence of hematite, its yellowish color is responsible for the yellowish-brown hue …
Characterisation of phosphorus and other impurities in goethite …
2019年11月1日 · Ochreous goethite is macroscopically yellow with a dull/chalky appearance and easily breaks down generating fines or ultrafines due to its friable nature. It …
Goethite – WGNHS – UW–Madison
Massive, yellow-brown goethite, with local botryoidal crusts occurs in the Gilman iron mine (NE SW SW Sec. 1 T.27N R.16W) west of Spring Valley (Rosenberg, 1991, Allen, 1909). — Goethite occurs as cement in a peculair conglomerate …
Goethite Mineral Data
Luster: Adamantine - Silky. Streak: yellowish brown. Optical Properties of Goethite. Gladstone-Dale: CI meas = -0.14 (Poor) - where the CI = (1-K PDmeas /K C) CI calc = -0.014 (Superior) - where the CI = (1-K PDcalc /K C) K PDcalc …
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