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ankerite    
铁白云石; 富铁白云石

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  • Ankerite - Wikipedia
    Ankerite, also known as brown spar [5]: 258 (German: braunspat) is a calcium, iron, magnesium, manganese carbonate mineral of the group of rhombohedral carbonates with the chemical formula Ca (Fe,Mg,Mn) (CO3)2
  • Ankerite: Mineral information, data and localities.
    Named after Matthias Joseph Anker (1771-1843), Austrian mineralogist Originally considered to be Ca (Mg,Fe) (CO 3) 2 (eg Hey, 1955, with >10% FeCO 3) with no specific requirement for Fe>Mg, before being redefined as strictly having Fe>Mg, i e with the dominant endmember CaFe (CO 3) 2
  • Ankerite – Mineral Properties, Photos and Occurrence
    Ankerite is a calcium-iron carbonate with ideal chemical formula CaFe (CO 3) 2 Ankerite is a member of dolomite group and often contains significant amount of dolomite (Mg) and kutnohorite (Mn) component
  • Ankerite Mineral Data
    Common in ore-bearing rocks as a rock forming mineral (gangue) High Fe species are found in iron ores Styrian Erzberg, Eisenerz, Styria, Austria Link to MinDat org Location Data Named after the Styrian (Austrian) mineralogist, Mathias Joseph Anker (1771-1843)
  • Ankerite Ca(Fe2+, Mg, Mn2+)(CO3)2 - Handbook of Mineralogy
    equal development of {1011} and {0001}, to 5 cm; columnar, stalactitic, granular, massive Twinning: Simple twins with {0001}, {1010}, or {1120} as twin plane Physical Properties: Cleavage: On {1011}, perfect Fracture: Subconchoidal Tenacity: Brittle Hardness = 3 5–4 D(meas ) = 2 93–3 10 D(calc ) = 3 11
  • ANKERITE (Calcium Iron Magnesium Manganese Carbonate)
    Ankerite forms in iron rich hydrothermal veins and metamorphic rocks with sulfides and other iron minerals Ankerite is a member of the Dolomite Group of minerals
  • Ankerite-Dolomite Series: Mineral information, data and localities.
    Ankerite-Dolomite Series mineral data, information about Ankerite-Dolomite Series, its properties and worldwide locations
  • Ankerite - Oxford Reference
    It is a form of ferroan dolomite where ferrous iron substitutes for Mg in a solid solution series from dolomite (CaMg (CO 3) 2) to ankerite ( (CaMg 0 75 Fe 0 25) (CO 3) 2) Ankerite often forms as a cement by diagenetic reaction (see diagenesis) from ferroan calcite at burial depths of about 2 5 km
  • Structure–Composition Relationships in the Dolomite–Ankerite . . .
    Here we compiled and analyzed a diffraction database to examine relationships between the structures and compositions of natural and synthetic double carbonates from the dolomite–ankerite–kutnohorite series
  • Ankerite mineral information and data - Dakota Matrix
    Ankerite from Huancavelica, Peru Large rhombic 3cm crystals of Ankerite with 2-5mm Tennantite (?) crystals Click thumbnail images for larger view





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