Kaolinite reflectance spectrum, 20±2°C, Pejcic <i>et al.</i> 2021 (EP2021-1148)

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

Description	Reflectance spectrum of Kaolinite [Al2Si2O5(OH)4] in specimen 'KGa1b' (CSIRO - C. Laukamp) from Georgia, USA.
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	Kaolinite [ Al₂Si₂O₅(OH)₄ ] Powder white kaolinite and calcite in a blue-grey Keokuk geode, from St. Francisville, Clark Co., Missouri, USA © Photo by John Krygier (http://www.mindat.org/user-13767.html#0), Public Domain
Specimen	KGa1b Kaolinite [CSIRO - ARRC Collection], Washington County, Georgia, USA
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	0.041692 … 0.94413 absolute reflectance

Nominal composition of Kaolinite [ Al₂Si₂O₅(OH)₄ ].
Element	Atoms	At%	Wt%
Al	2	11.8	20.9
Si	2	11.8	21.8
O	9	52.9	55.8
H	4	23.5	1.56