Calcite group - IR Reflectance spectra


 Band (cm-1)
 Attributions  References
  • 711: Calcite
  • 727: Dolomite
  • 727: Rhodochrosite
  • 738: Siderite
  • 742: Smithsonite
  • 748: Magnesite
  • 750: Gaspeite
 CO32- ν4 in plane bend  
 860-890  CO32- ν2 out of plane bend  
 ~1500  CO32- ν3 asymetric strech  

Calcite with serpentine cab – 13.58 ct – reportedly from China


irs  calcite+serpentine 1358  yellow-and-brown  (China)

Brown calcite – crystal – Mexico


irs  calcite C  brown  Mexico

Brown calcite – 0.54 ct – Book Cliff,Colorado, USA


irs  calcite 054  brown  BookCliff Colorado USA

Bluish-white calcite – rough – China


irs  calcite B  bluish-white  China

Light-bluish-green calcite – 13.15 ct rough – Mexico


irs  calcite 1315B  light-bluish-green  Mexico

Light-grayish-blue calcite – 4.67 ct rough – Madagascar


irs  calcite 467B  light-grayish-blue  Madagascar

Light-yellow calcite – 3.77 ct – Unknown locality


irs  calcite 377  light-yellow  Unknown Locality

Brownish-orange calcite – 3.03 ct – Erongo, Namibia


irs  calcite 303  brownish-orange  Erongo Namibia

Yellowish-brown calcite – 2.48 ct slice – Morvan, France


irs  calcite 248L  yellowish-brown  Morvan France

Pink cobalto-calcite – slice – Marocco


irs  calcite(Co) -L  pink  Marocco
Weak signal, ν4 is not observable

Yellowish-green gaspeite – Paris mine, Widgiemooltha, Kambalda, Australia


irs  gaspeite L  yellowish-green  ParisMine Widgiemooltha Kambalda Australia

Colorless magnesite – 1.25 ct – Unknown locality


irs  magnesite 125  colorless  Unknown Locality

Blue and white magnesite (turquoise imitation) – slice – China


irs  magnesite L  blue white  dyed imitation turquoise  China

Yellowish-green magnesite (gaspeite imitation) – slice – Unknown locality


irs  magnesite (chip)L  yellowish-green  Unknown Locality

Red rhodochrosite – 3.31 ct – Argentina


irs  rhodochrosite 331  red  Argentina

Red rhodochrosite – 0.50 ct – Unknown locality


irs  rhodochrosite 050  red  Unknown Locality
Unusual ν4 at 725 instead of 727 cm-1

Siderite base of green to reddish-orange ammolite – 10.66 ct – Canada


irs  ammolite1066 orange-green back

Very-light-green smithsonite – 0.16 ct – USA


irs  smithsonite 016  very-light-green  USA

Colorless smithsonite – 0.18 ct – Brazil


irs  smithsonite 018  colorless  Brazil

Pink smithsonite – 4.06 ct – Mexico


irs  smithsonite 406  pink  Mexico

Yellow smithsonite – 3.29 ct – Masua, Sardaigne, Italy


irs  smithsonite 329  yellow  Masua Sardinia Italy

Yellow smithsonite – 3.89 ct – China


irs  smithsonite 389  yellow  China