natural red oxide
1Red ochre — and yellow ochre (pronounced /IPA| əʊk.ə/, from the Greek ὄχρος, yellow) are pigments made from naturally tinted clay. It has been used worldwide since prehistoric times. Chemically, it is hydrated iron (III) oxide.Ochres are non toxic, and can… …
2Red Mountain (Birmingham, Alabama) — Red Mountain is a long ridge running southwest northeast and dividing Jones Valley from Shades Valley south of Birmingham, Alabama, United States. It is part of the Ridge and Valley province of the Appalachian mountains. The Red Mountain… …
3Natural dye — Skeins of wool colored with natural plant dyes. Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources – roots, berries, bark, leaves, and …
4Natural phenol — Quercetin, a typical flavonoid, is a natural phenol Natural phenols, bioavailable phenols, plant phenolics, low molecular weight phenols or phenoloids[1][2] …
5Red beds — The term red beds usually refers to strata of reddish colored sedimentary rocks such as sandstone, siltstone or shale that were deposited in hot climates under oxidizing conditions. [http://www.ac.wwu.edu/ babcock/v2 1.html] The red color comes… …
6Red — adj. & n. adj. 1 of or near the colour seen at the least refracted end of the visible spectrum, of shades ranging from that of blood to pink or deep orange. 2 flushed in the face with shame, anger, etc. 3 (of the eyes) bloodshot or red rimmed… …
7red — adj. & n. adj. 1 of or near the colour seen at the least refracted end of the visible spectrum, of shades ranging from that of blood to pink or deep orange. 2 flushed in the face with shame, anger, etc. 3 (of the eyes) bloodshot or red rimmed… …
8Red Ocher Culture — The Red Ocher Culture is a series of archaeological sites located in the Upper Great Lakes, the Greater Illinois River Valley, and the Ohio River Valley in the American Midwest. The sites form a burial complex, dating from 1000 BC to 400 BC, the… …
9spanish oxide — noun Usage: usually capitalized S : a dull red natural iron oxide pigment compare indian red 1a, spanish brown …
10Aluminium oxide — Alumina redirects here. For the company, see Alumina Limited. This article is about aluminium(III) oxide Al2O3. For other uses, see Aluminium oxide (disambiguation). Aluminium oxide …
