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siderite

n. 菱铁矿,陨铁

菱铁矿,陨铁

WordNet (r) 3.0 (2006) (WordNet)

siderite
n 1: iron ore in the form of ferrous carbonate [synonym: {siderite},
{chalybite}]
2: a meteorite consisting principally of nickel and iron

The Collaborative International Dictionary of English v.0.48 (gcide)

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 yellowish
brown color. Called also {sparry iron}, {spathic
iron}.
(b) A meteorite consisting solely of metallic iron.
(c) An indigo-blue variety of quartz.
(d) Formerly, magnetic iron ore, or loadstone.
[1913 Webster]

2. (Bot.) Any plant of the genus {Sideritis}; ironwort.
[1913 Webster] Siderographic

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Siderite - Wikipedia
Siderite is a mineral composed of iron (II) carbonate (FeCO 3) Its name comes from the Ancient Greek word σίδηρος (sídēros), meaning "iron" A valuable iron ore, it consists of 48% iron and lacks sulfur and phosphorus
Siderite: Mineral information, data and localities.
Most often found in bedded sedimentary deposits with a biological component, with shales, clays and coal beds - suggesting that the siderite is biogenically created under low-oxygen and low-Ph conditions
Siderite Mineral: Composition, Crystal Structure, and Geological . . .
Siderite is both an iron ore and gangue mineral Its principal economic value lies in its high iron content and the absence of process contaminants such as sulfur or phosphorous
Siderite | Iron Carbonate, Carbonate Minerals, Sedimentary Rocks . . .
Siderite, iron carbonate (FeCO3), a widespread mineral that is an ore of iron The mineral commonly occurs in thin beds with shales, clay, or coal seams (as sedimentary deposits) and in hydrothermal metallic veins (as gangue, or waste rock)
Siderite: The mineral Siderite information and pictures
Detailed description, properties, locality information guide about the mineral siderite
Siderite Meanings and Crystal Properties - The Crystal Council
Siderite, also known as Chalybite, is an iron carbonate mineral that crystallizes in tabular crystals, rhombohedrons clusters, curved cleavage surfaces, botryoidal, and massive formations The color can range from tan, yellow, and brown, to grey, green, red, black, and sometimes even colorless
Siderite Mineral Data
Siderite Arsenopyrite Comments: White, metallic arsenopyrite and tan siderite crystals Location: Panasqueira (2000, 3rd level), in the region of Beira Baixa, Portugal Scale: 11 x 7 cm © Fabre Minerals Images: Siderite Comments: Blocky siderite crystals on quartz Location: Panasqueira (2nd level), in the region of Beira Baixa, Portugal
Siderite - an overview | ScienceDirect Topics
Siderite is defined as a carbonate mineral (FeCO3) that decomposes at 585 °C, releasing CO2 and forming iron oxides such as FeO, Fe3O4, or magnetite, depending on the conditions of oxygen and carbon dioxide partial pressures
Siderite - Sandatlas
Siderite is a carbonate mineral (FeCO 3) It is not rare but nowhere as common carbonate as calcite (CaCO 3) and dolomite (CaMg (CO 3) 2) Typically to carbonates, siderite also forms rhombohedral crystals
Siderite - soilsfacstaff. cals. wisc. edu
Siderite is an iron carbonate, composition FeCO 3 It is a member of the Carbonate mineral group Both Mn 2+ and Mg 2+ substitute for Fe and a solid solution exists between siderite, rhodochrosite (MnCO 3) and magnesite (MgCO 3) Click on the buttons below to highlight specific features

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