earthy brown hematite
1brown hematite — Limonite Li mon*ite (l[imac] m[o^]n*[imac]t), n. [Gr. leimw n any moist grassy place, a meadow: cf. F. limonite, G. limonit.] (Min.) Hydrous sesquioxide of iron, an important ore of iron, occurring in stalactitic, mammillary, or earthy forms, of… …
2Hematite — Hem a*tite, n. [L. haematites, Gr. ? bloodlike, fr. a i^ma, a i matos, blood.] (Min.) 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… …
3hematite — noun Date: 1540 a reddish brown to black mineral consisting of ferric oxide, constituting an important iron ore, and occurring in crystals or as earthy red ocher • hematitic adjective …
4bloodstone — Hematite Hem a*tite, n. [L. haematites, Gr. ? bloodlike, fr. a i^ma, a i matos, blood.] (Min.) 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… …
5oligist iron — Hematite Hem a*tite, n. [L. haematites, Gr. ? bloodlike, fr. a i^ma, a i matos, blood.] (Min.) 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… …
6rhombohedral iron ore — Hematite Hem a*tite, n. [L. haematites, Gr. ? bloodlike, fr. a i^ma, a i matos, blood.] (Min.) 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… …
7specular iron — Hematite Hem a*tite, n. [L. haematites, Gr. ? bloodlike, fr. a i^ma, a i matos, blood.] (Min.) 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… …
8Limonite — is an ore consisting in a mixture of hydrated iron(III) oxide hydroxide of varying composition. The generic formula is frequently written as FeO(OH)·nH2O, although this is not entirely accurate as limonite often contains a varying amount of oxide …
9Limonite — Li mon*ite (l[imac] m[o^]n*[imac]t), n. [Gr. leimw n any moist grassy place, a meadow: cf. F. limonite, G. limonit.] (Min.) Hydrous sesquioxide of iron, an important ore of iron, occurring in stalactitic, mammillary, or earthy forms, of a dark… …
10Oxide minerals — ▪ Table Oxide minerals name colour lustre Mohs hardness specific gravity anatase brown to indigo blue and black; also variable adamantine to metallic adamantine 5½–6 3.8–4.0 boehmite white, when pure 3 3.0–3.1 brookite various browns metallic… …
