Petalite reflectance spectrum, IR illum., CSIRO

Description	Reflectance spectrum of Petalite in M2823, from CSIRO Reflectance (2025). From original file 'petalite_M2823_rock_512.0.dpt'.
Reference	Reflectance spectra measured by Carsten Laukamp and colleagues
Material	Petalite [ LiAlSi₄O₁₀ ]
Analysis technique	Reflectance
Instrument	Bruker Vertex 80v FTIR spectrometer
Illumination	IR light source
Channel count	3667
Wavelength range	2004 … 16664 nm
Intensity range	0.477 absolute reflectance
Download	petalite_M2823_rock_512.0.txt [80.0 kB]

Name	M2823 Petalite
Owner	CSIRO - ARRC Collection
Locality	Londonderry pegmatite, Shire of Coolgardie, Goldfields-Esperance Region, WA, Australia
Link to CMR Specify database	https://cmr-specify.csiro.au/specify/bycatalog/CMR-MS/2024-MS-0000000638
Phase abundance (QXRD)	Petalite: 98% Quartz: 2%
Other measurements	Petalite and Quartz XRD quant/phase, x-ray beam, Owen et al. 2023 (Jobs # 6243, 6245)

Image of Petalite and Quartz in specimen 'M2823 Petalite' [CSIRO].

Nominal composition of Petalite [ LiAlSi₄O₁₀ ].
Element	Atoms	At%	Wt%
Li	1	6.25	2.27
Al	1	6.25	8.81
Si	4	25	36.7
O	10	62.5	52.2
Total	16	100	100