Spec4Gem - Calcite group - IR Reflectance spectra

Calcite group - IR Reflectance spectra

Calcite group - IR Reflectance spectra

Calcite:

Calcite with serpentine cab – 13.58 ct – reportedly from China
Brown calcite – crystal – Mexico
Brown calcite – 0.54 ct – Book Cliff,Colorado, USA
Bluish-white calcite – rough – China
Light-bluish-green calcite – 13.15 ct rough – Mexico
Light-grayish-blue calcite – 4.67 ct rough – Madagascar
Light-yellow calcite – 3.77 ct – Unknown locality
Brownish-orange calcite – 3.03 ct – Erongo, Namibia
Yellowish-brown calcite – 2.48 ct slice – Morvan, France
Pink cobalto-calcite – slice – Marocco

Gaspeite:

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

Magnesite:

Colorless magnesite – 1.25 ct – Unknown locality
Blue and white magnesite (turquoise imitation) – slice – China
Yellowish-green magnesite (gaspeite imitation) – slice – Unknown locality

Rhodochrosite:

Red rhodochrosite – 3.31 ct – Argentina
Red rhodochrosite – 0.50 ct – Unknown locality

Siderite:

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

Smithsonite:

Very-light-green smithsonite – 0.16 ct – USA
Colorless smithsonite – 0.18 ct – Brazil
Pink smithsonite – 4.06 ct – Mexico
Yellow smithsonite – 3.29 ct – Masua, Sardaigne, Italy
Yellow smithsonite – 3.89 ct – China

Band (cm^-1)	Attributions	References
711: Calcite 727: Dolomite 727: Rhodochrosite 738: Siderite 742: Smithsonite 748: Magnesite 750: Gaspeite	CO₃^2- ν4 in plane bend
860-890	CO₃^2- ν2 out of plane bend
~1500	CO₃^2- 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

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