Carbonate Minerals

Carbonate Minerals
  • System: LabRAM HR
  • Time per point: 500ms
  • Step size: 200 µm
  • Data points: 5,041

Macro-scale mapping of a 14 mm x 14 mm area of a polished block of carbonate minerals, using DuoScan™ to create a 200 µm x 200 µm laser spot.  Matching the acquisition step size, this ensures that the full surface area of the sample is analysed.

Minerals identified through their Raman spectra include:

  • Red: Mg-Siderite (FeCO3–MgCO3 solid solution)
  • Yellow:  Calcite (CaCO3)
  • Green:  Dolomite (CaMg(CO3)2)
  • Dark blue: Aragonite (CaCO3)
  • Light blue: Siderite (FeCO3)
  • Orange: Magnesite (MgCO3)
  • Pink: Rhodocrosite (MnCO3)