Overview

goethite

Return to overview »

Results | All related links for this item | 1-6 of 6 results for:


Refine by type

Refine by product

 

bauxite

Overview page. Subjects: Earth Sciences and Geography.

The chief ore of aluminium, consisting of hydrous aluminium oxides and aluminous laterite. It is a claylike amorphous material formed by the weathering of silicate rocks under tropical...

See overview in Oxford Index

hydration

Overview page. Subjects: Chemistry — Earth Sciences and Geography.

The incorporation of water by minerals. Hydration is believed to be a major force in weathering coarse-grained igneous rocks; see Hughes (1998) Geoarchaeol. 3, 4.

See overview in Oxford Index

hydroxide

Overview page. Subjects: Chemistry.

A metallic compound containing the ion OH (hydroxide ion) or containing the group –OH (hydroxyl group) bound to a metal atom. Hydroxides of typical metals are basic; those of metalloids...

See overview in Oxford Index

limonite

Overview page. Subjects: Chemistry — Earth Sciences and Geography.

Mineral, FeO(OH).nH2O; sp. gr. 2.7–4.3; hardness 4.0–5.3; yellowish-brown to reddish-brown; normally earthy lustre; usually amorphous; occurs as a secondary mineral from the weathering of...

See overview in Oxford Index

manganite

Overview page. Subjects: Earth Sciences and Geography.

Mineral, MnO2Mn(OH)2; sp. gr. 4.2–4.4; hardness 3–4; monoclinic; dark steel-grey to black; reddish-brown to black streak; sub-metallic lustre; crystals prismatic with striated faces, often...

See overview in Oxford Index

oxide

Overview page. Subjects: Chemistry.

Binary compounds formed between elements and oxygen. Oxides of nonmetals are covalent compounds having simple molecules (e.g. CO, CO2, SO2) or giant molecular lattices (e.g. SiO2). They are...

See overview in Oxford Index