hematite

Noun

Meaning

An important ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in splendent rhombohedral crystals, and in massive and earthy forms; -- the last called red ocher. Called also specular iron, oligist iron, rhombohedral iron ore, and bloodstone. See Brown hematite, under Brown.

Synonyms

Hypernyms

Phrases with the word

Examples

In contrast, some minerals, such as hematite or pyrite are opaque even in thin-section. Source: Internet

For example, the Morin transition temperature of hematite decreases with a decrease in the particle size. Source: Internet

"Knowing just how the hematite on Mars was formed will help us characterize the past environment and determine whether that environment was favorable for life". Source: Internet

Marquette continues to be a shipping port for hematite ores and, today, enriched iron ore pellets, from nearby mines and pelletizing plants. Source: Internet

Ochre is a clay that is colored by varying amounts of hematite, varying between 20% and 70%. citation Red ochre contains unhydrated hematite, whereas yellow ochre contains hydrated hematite ( Fe 2 3 • 2 ). Source: Internet

Red ochre is composed of clay tinted with hematite. Source: Internet

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