Goethite (/ˈɡɜːrtaɪt/, US also /ˈɡoʊθaɪt/) is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the α-polymorph. It...
17 KB (1,689 words) - 12:12, 26 February 2024
within the matrix that control goethite crystal size and shape. Because of this, the main factor influencing goethite crystal growth is the chitin fibers...
32 KB (4,119 words) - 19:47, 9 September 2024
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....
11 KB (1,227 words) - 00:12, 10 June 2024
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)...
10 KB (967 words) - 03:38, 19 August 2024
Sphalerite 4 Iron 4–4.5 Ordinary steel 4.5 Colemanite 5 Apatite 5-5.5 Goethite 5.5 Glass 5.5–6 Opal 6 Rhodium 6-6.5 Rutile 6.5 Silicon 6.5–7 Jadeite 7...
16 KB (1,110 words) - 00:26, 16 September 2024
crystals transformed into limonite, a compact mixture of iron oxides where goethite generally predominates, are common. In some cases, only partial replacement...
6 KB (763 words) - 15:43, 19 September 2024
In general, bog ores consist primarily of iron oxyhydroxides, commonly goethite (FeO(OH)). Iron-bearing groundwater typically emerges as a spring and the...
20 KB (2,423 words) - 10:51, 11 May 2024
drab colored ferric hydroxides. These ferric hydroxides commonly include goethite (FeO-OH) and so-called "amorphous ferric hydroxide" or limonite. Much of...
9 KB (1,033 words) - 08:26, 25 June 2024
minerals that form concretions include iron oxides or hydroxides (such as goethite and hematite), dolomite, siderite, ankerite, marcasite, barite, and gypsum...
55 KB (6,186 words) - 20:32, 23 September 2024
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...
12 KB (1,166 words) - 03:53, 8 September 2024