goethite


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Related to goethite: limonite
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Synonyms for goethite

a red or yellow or brown mineral

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References in periodicals archive ?
The NIST terahertz wave detection method works because goethite and hematite are antiferromagnetic.
Hakro [8] reported the sediments of Bara Formation from Ranikot area are composed of quartz (low), hematite, potash feldspar, gypsum and goethite minerals.
By comparison, the non-magnetic dark nodules showed similar hematite peaks, stronger peaks of kaolinite and gibbsite, and weaker peaks of quartz and goethite, and were lacking of magnetite-maghemite.
4, 5 and 7 respectively) was attributed to dehydroxylation reactions of goethite ([alpha]-FeO.
The palaeomagnetic data suggest that the low-temperature component is carried by goethite, while the ChRM carrier is most possibly Ti-magnetite.
3 million-ton iron oxide resource comprises distinctive limonite, goethite, and hematite alongside a deposit of halloysite clay, whose applications include a high performance concrete pozzolan, Dragonite.
Studies of remote sensing images and aeromagnetic data, together with the historical sampling results (see Figure 1 and Appendix 1 link below), have outlined several areas of potential haematite and/or goethite enrichment, providing attractive targets for initial exploration.
goethite (yellow), so that the anhydride Iron Oxide form, i.
In lithofacies-1 (laterite / bauxite / kaolinite) the goethite, kaolinite, boehmite, gibbsite and dickite minerals may owe to insitu leaching of older rocks.
3]), possibly goethite ([alpha]-FeOOH), and other compounds [3, 17-21].
1994), ripidolite and beidellite (Sondi and Pravdic 1996), and also the iron oxide goethite (Parfitt et al.
Chikla Braunite, Pyrolusite, Psilomelane, Hematite, Goethite, Quartz, Feldspar, Apatite and Garnet 4.
The authors of the new laboratory study found that low pH levels in seawater created a positive charge on samples of goethite (an iron oxide that is one of the most abundant compounds in ocean sediments), which then attracted negatively charged arsenic.
Alteration encountered in the hole includes: decalcification, calcite-filled solution cavities, remobilized carbon vein fillings and commonly intense oxidation to hematite and goethite.