Limonite (/ˈlaɪməˌnaɪt/) is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently...
15 KB (1,669 words) - 16:49, 7 February 2024
curve of a limonite vug Example of open space in a vug allowing the formation of crystallized minerals Apple green pyromorphite cluster on limonite matrix...
4 KB (396 words) - 00:46, 6 March 2024
major ingredient of all the ochres is iron(III) oxide-hydroxide, known as limonite, which gives them a yellow colour. A range of other minerals may also be...
39 KB (4,944 words) - 23:40, 15 August 2024
iron oxides. In the case of sienna, the most prevalent iron oxides are limonite (which in its natural state has a yellowish color), and goethite. In addition...
13 KB (1,612 words) - 11:10, 21 August 2024
readily oxidizes to limonite. When it is partially or fully oxidized to limonite, the green color becomes a yellowish-brown. Limonite is opaque under the...
16 KB (2,062 words) - 00:10, 14 January 2024
quartz crystals and altered amphibole fibres that have mostly turned into limonite. Tiger iron is an altered rock composed chiefly of tiger's eye, red jasper...
6 KB (544 words) - 17:11, 17 July 2024
is frequently seen in relatively soft, loosely bound minerals, such as limonite, kaolinite and aluminite. Hackly fracture (also known as jagged fracture)...
3 KB (296 words) - 17:50, 20 January 2024
weathering of grey serpentinite to greyish-brown nickel-containing laterite with a high iron percentage (nickel limonite), near Mayagüez, Puerto Rico....
36 KB (3,979 words) - 01:42, 26 August 2024
kinds of lateritic nickel ore have to be distinguished: limonite types and silicate types. Limonite type laterites (or oxide type) are highly enriched in...
8 KB (1,147 words) - 15:24, 27 February 2024
Gold vein stockwork in limonite, from Gold Flake Vein, Farncomb Hill, Breckenridge Mining District, Summit County, Colorado, USA...
42 KB (2,782 words) - 11:49, 1 September 2024
ore - saprolite ore and limonite ore. The company's saprolite ore comes in two varieties: high-grade and mid-grade. NAC's limonite ore is categorized as...
8 KB (804 words) - 09:15, 30 July 2024
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, 48.2% Fe). Ores containing...
55 KB (7,199 words) - 07:36, 26 August 2024
253 221 167 H085L90C30 Vintage White 85° 93% 5% 244 239 228 H085L93C05 Limonite Brown 90° 30% 10% 75 68 51 H090L30C10 Bark Green 90° 30% 20% 81 68 33 H090L30C20...
315 KB (398 words) - 12:43, 16 July 2024
(hypogene zone). Pyrite (FeS2) has oxidised to form goethite (FeO(OH)) and limonite (FeO(OH)·nH2O), which form a porous covering over the oxidized zone known...
7 KB (767 words) - 14:47, 27 March 2024
Adamite on limonite from the Gold Hill District Tooele County, Utah, US. Scale at bottom is c. 2.5 cm....
4 KB (305 words) - 20:10, 19 January 2024
are not uncommon in sea beds, and that the materials found, including limonite and goethite, can indeed be formed by nature itself. The single sonar image...
11 KB (1,193 words) - 16:43, 3 August 2024
widespread iron mineral, one of the most important iron ores; Iron ochre or limonite: 85 — Fe2O3·Н2О,: 30 a mixture of secondary natural minerals, iron oxide...
3 KB (398 words) - 22:14, 28 July 2024
smithsonite, hemimorphite, willemite, cerussite, aurichalcite, calcite and limonite. It was first described in 1853 for an occurrence in Bad Bleiberg, Carinthia...
3 KB (122 words) - 19:25, 17 January 2024
Fire agate is a variety of chalcedony with inclusions of goethite or limonite causing an iridescent effect. It can display a wide range of iridescent...
18 KB (1,845 words) - 19:56, 3 May 2024
such as crystal form, hardness, and cleavage. It excludes ozokerite, limonite, obsidian and many other amorphous (non-crystalline) materials that occur...
109 KB (13,007 words) - 16:14, 20 July 2024
the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. The name opal is believed to be...
56 KB (5,837 words) - 15:06, 27 August 2024
iron minerals comprising ironstones can consist either of oxides, i.e. limonite, hematite, and magnetite; carbonates, i.e. siderite; silicates, i.e. chamosite;...
4 KB (438 words) - 20:09, 14 August 2024
1345-25-1 FeO2 iron dioxide 12411-15-3 FeO2H goethite 1310-14-1 FeO2H · nH2O limonite 1317-63-1 Fe(OH)2 iron(II) hydroxide 18624-44-7 Fe(OH)3 iron(III) hydroxide...
182 KB (107 words) - 12:51, 21 August 2024
grains together. Other minerals that act as cements include: hematite, limonite, feldspars, anhydrite, gypsum, barite, clay minerals, and zeolite minerals...
35 KB (3,935 words) - 15:39, 24 August 2024
around 22,000 to 28,000 years ago. The Monpazier Venus is carved out of limonite, a local rock, and is about 4.7 centimeters (1.85 inches) in height. It...
3 KB (359 words) - 01:44, 9 August 2024
include laterite, where the principal mineral mixtures are nickeliferous limonite, (Fe,Ni)O(OH), and garnierite (a mixture of various hydrous nickel and...
89 KB (9,740 words) - 09:36, 21 June 2024
south and the east. The ore used was limonite in the form of red soil and bog ore. From 200 CE ore from limonite-deposits in lakes was used. The ore was...
20 KB (2,423 words) - 10:51, 11 May 2024
oxyhydroxide is the main component of other minerals and mineraloids: Limonite is a commonly occurring mixture of mainly goethite, lepidocrocite, quartz...
11 KB (1,227 words) - 00:12, 10 June 2024
of the dissolved ore minerals). In other cases, quartz and iron oxides, limonite, goethite, and jarosite, exist as pseudomorphs, replacing the pyrite and...
3 KB (297 words) - 12:57, 23 July 2023
added by smelters began to produce a red-coloured sludge rich in copper, limonite, silicic acid, and zinc. When the sludge was heated for a few hours and...
4 KB (383 words) - 03:21, 1 September 2024