• WordNet 3.6
    • n siderite a meteorite consisting principally of nickel and iron
    • n siderite iron ore in the form of ferrous carbonate
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Webster's Revised Unabridged Dictionary
    • Siderite (Min) A meteorite consisting solely of metallic iron.
    • Siderite (Min) An indigo-blue variety of quartz.
    • Siderite (Bot) Any plant of the genus Sideritis; ironwort.
    • Siderite (Min) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light yellowish brown color. Called also sparry iron spathic iron.
    • Siderite (Min) Formerly, magnetic iron ore, or loadstone.
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Century Dictionary and Cyclopedia
    • n siderite The lodestone. The Latin word was also used by Pliny to designate a mineral which he classed with the diamond, but which cannot be identified from his description. It may possibly have been blende. See siderolite.
    • n siderite Native iron protocarbonate, a mineral of a yellowish or brownish color, crystallizing in the rhombohedral system with perfect rhombohedral cleavage. It is isomorphous with calcite (calcium carbonate) and the other rhombohedral carbonates of magnesium, zinc, and manganese. It also occurs in granular, compact forms; in spheroidal concretionary forms with fibrous structure (sphærosiderite); and in earthy or stony forms, impure from the presence of sand or clay, and then called clay ironstone. It is one of the important ores of iron. Also called chalybite, spathic or sparry iron, junckerite, junkerite. The term siderite is used only as meaning chalybite, spathic iron, or carbonate of iron by scientific men at the present time.
    • n siderite A meteorite consisting essentially of nickeliferous metallic iron. See meteorite.
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Chambers's Twentieth Century Dictionary
    • n Siderite sid′ėr-īt the lodestone: native iron protocarbonate—also Chalybite, Spathic or Sparry iron, Junckerite.
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Webster's Revised Unabridged Dictionary
L. sideritis, loadstone, Gr. , , of iron, from iron
Chambers's Twentieth Century Dictionary
L. sideritis, the lodestone—Gr. sidēritēs, of iron—sidēros, iron.


In literature:

This compound occurs in nature as siderite, and is a valuable ore.
"An Elementary Study of Chemistry" by William McPherson
This siderite is specially interesting on account of its distinctly metallic character.
"The Story of the Heavens" by Robert Stawell Ball
Their principal iron mineral is hematite, although the English ores also contain considerable iron carbonate or siderite.
"The Economic Aspect of Geology" by C. K. Leith
These last are the meteorites, or siderites, or aerolites, or bolides, of our museums.
"Pioneers of Science" by Oliver Lodge
About two-thirds of the ore mined is clayey siderite.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 7" by Various

In news:

James Siderits (left), part-owner of Blue Ash Tool & Die Co, said cuts to the defense budget could hurt his manufacturing business.
James Siderits, part-owner of family business Blue Ash Tool & Die Co.