Zinnwaldite reflectance spectrum, 20±2°C, Pejcic et al. 2021 (EP2021-1148)

Measurement details

Description Reflectance spectrum of Zinnwaldite in specimen 'M1597' (CSIRO - C. Laukamp).
Reference Pejcic et al. 2021 (EP2021-1148)
Pejcic, Bobby; Shelton, Tina; leGras, Monica; Laukamp, Carsten; Francis, Neil; Lau, Ian. Mid infrared spectral library. Perth: CSIRO; 2021. csiro:EP2021-1148. https://doi.org/10.25919/5b6n-n462
Material Zinnwaldite [ KFeII2Al(Al2Si2O10)(OH)2 — KLi2Al(Si4O10)(F, OH)2 ]
Specimen M1597 Zinnwaldite [CSIRO - ARRC Collection], Zinnwald-Cínovec mining region, Ore Mountains, Europe
Specimen temperature 20±2°C
Technique Reflectance
Instrument Bruker Vertex 80v FTIR spectrometer
Det. technology HgCdTe (MCT) photodetector, LN2 cooled
Channel count 3835
Energy range 0.074378 … 0.929505 eV
Intensity range 0.035693 … 0.425454 absolute reflectance

Composition

Nominal composition of Zinnwaldite [ KFeII2Al(Al2Si2O10)(OH)2 — KLi2Al(Si4O10)(F,OH)2 ].
Element Atoms
H 0-2
Li 0-2
K 1
Fe 0-2
Al 1
Si 4
O 10-12
F 0-2

Measurement spectrum

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