Dolomite (mineral)
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Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg2. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite. An al
Dolomite (white) on talc
Dolomite and calcite look similar under a microscope, but thin sections can be etched and stained in order to identify the minerals. Photomicrograph of a thin section in cross and plane polarised light: the brighter mineral grains in the picture are dolomite, and the darker grains are calcite.
Cristallo in the Dolomites mountain range near Cortina d'Ampezzo, Italy. The Dolomite Mountains were named after the mineral.
Brown spar
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Brown spar or brown-spar is a trivial, partly obsolete name for at least four carbonate minerals that are relatively similar in composition: ankerite, dolomite, magnesite and siderite, which have a ch
Brown spar (siderite, Silesia)
Ankerite
Brown dolomite
Siderite