Talc reflectance spectrum, IR illum., CSIRO 2025

Description	Reflectance spectrum of Talc in M1653, from CSIRO Reflectance (2025). From original file 'Talc_M1653_b.dpt'.
Reference	Reflectance spectra measured by C. Laukamp and co-authors, CSIRO Mineral Resources
Material	Talc [ Mg₃Si₄O₁₀(OH)₂ ]
Analysis technique	Reflectance
Instrument	Bruker Vertex 80v FTIR spectrometer
Illumination	IR light source
Channel count	3667
Wavelength range	2004 … 16664 nm
Intensity range	0.303 absolute reflectance
Download	Talc_M1653_b.txt [80.1 kB]

Name	M1653 Talc
Owner	CSIRO - ARRC Collection
Locality	Bulman, Roper Gulf Region, Katherine Region, Northern Territory, Australia
Link to CMR Specify database	https://cmr-specify.csiro.au/specify/bycatalog/CMR-MS/2024-MS-0000000807
Phase abundance (QXRD)	Talc: 100%
Other measurements	Talc XRD quant/phase, x-ray beam, Owen and Gomez-Camacho 2022 (Job # 5974)

Image of Talc [ Mg3Si4O10(OH)2 ] in specimen 'M1653 Talc' [CSIRO].

Nominal composition of Talc [ Mg₃Si₄O₁₀(OH)₂ ].
Element	Atoms	At%	Wt%
Mg	3	14.3	19.2
Si	4	19	29.6
O	12	57.1	50.6
H	2	9.52	0.532
Total	21	100	100