Rhombohedral iron ore — Rhombohedral Rhom bo*he dral, a. (Geom. & Crystallog.) Related to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a system of forms including the rhombohedron and scalenohedron. [1913… … The Collaborative International Dictionary of English
rhombohedral iron ore — noun 1. : hematite 2. : siderite II … Useful english dictionary
titanic iron ore — Menaccanite Me*nac can*ite, n. [From Menaccan, in Cornwall, where it was first found.] (Min.) An iron black or steel gray mineral, consisting chiefly of the oxides of iron and titanium. It is commonly massive, but occurs also in rhombohedral… … The Collaborative International Dictionary of English
Rhombohedral — Rhom bo*he dral, a. (Geom. & Crystallog.) Related to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a system of forms including the rhombohedron and scalenohedron. [1913 Webster]… … The Collaborative International Dictionary of English
Rhombohedral system — Rhombohedral Rhom bo*he dral, a. (Geom. & Crystallog.) Related to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a system of forms including the rhombohedron and scalenohedron. [1913… … The Collaborative International Dictionary of English
oligist 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… … The Collaborative International Dictionary of English
specular 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… … The Collaborative International Dictionary of English
Iron(III) oxide — Iron(III) oxide … Wikipedia
sparry iron — Siderite Sid er*ite, n. [L. sideritis loadstone, Gr. ????, ????, of iron, from ???? iron.] 1. (Min.) (a) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light… … The Collaborative International Dictionary of English
spathic iron — Siderite Sid er*ite, n. [L. sideritis loadstone, Gr. ????, ????, of iron, from ???? iron.] 1. (Min.) (a) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light… … The Collaborative International Dictionary of English
