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

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

Description	Reflectance spectrum of Muscovite [KAl2(Si3Al)O10(OH)2] in specimen 'M2188' (CSIRO - C. Laukamp), measured September 2023.
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	Muscovite [ KAl₂(Si₃Al)O₁₀(OH)₂ ] Muscovite specimen from Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil. Size: 6 x 5.3 x 3.9 cm © 2010 Rob Lavinsky, iRocks.com, CC-BY-SA-3.0
Specimen	M2188 Muscovite [CSIRO - ARRC Collection], Bowen, Whitsunday Region, Queensland, Australia
Specimen temperature	20±2°C
Technique	Reflectance
Instrument	Bruker Vertex 80v FTIR spectrometer
Det. technology	HgCdTe (MCT) photodetector, LN2 cooled
Channel count	3835
Wavelength range	1333.55 … 16665.6 nm
Intensity range	0.040051 … 0.717213 absolute reflectance

Nominal composition of Muscovite [ KAl₂(Si₃Al)O₁₀(OH)₂ ].
Element	Atoms	At%	Wt%
K	1	4.76	9.82
Al	3	14.3	20.3
Si	3	14.3	21.2
O	12	57.1	48.2
H	2	9.52	0.506