Actinolite reflectance spectrum, 20±2°C, Pejcic et al. 2022 (EP2022-5804)

Measurement details

Description VNIR-SWIR reflectance spectrum of Actinolite in specimen 'MES177' (NVCL) from Spoo Ness, Lunda Wick, Unst, Shetland Islands, United Kingdom.
Reference Pejcic et al. 2022 (EP2022-5804)
Pejcic, Bobby; Shelton, Tina; Laukamp, Carsten; Lau, Ian; leGras, Monica. Visible-Near Infrared Spectral Library. Perth: CSIRO; 2022. csiro:EP2022-5804. https://doi.org/10.25919/whwy-ma94
Material Actinolite [ ☐Ca2(Mg4.5-2.5FeII0.5-2.5)Si8O22(OH)2 ]
Specimen MES177 [NVCL, AuScope Limited], Spoo Ness, Lunda Wick, Unst, Shetland Islands, United Kingdom
Specimen temperature 20±2°C
Technique Reflectance
Instrument ASD FieldSpec3 spectrometer (model A122300)
Det. technology 512 element Si photodiode array (350-1000nm) + InGaAs photodiodes (1000-2500nm)
Acquisition time 3 s
Channel count 2151
Wavelength range 350 … 2499 nm
Intensity range 0.060259 … 0.36775 absolute reflectance
Related measurement Actinolite reflectance spectrum, 20±2°C, Pejcic et al. 2021 (EP2021-1148)
Line OH 2ν: 7147 cm-1

Composition

Nominal composition of Actinolite [ ☐Ca2(Mg4.5-2.5FeII0.5-2.5)Si8O22(OH)2 ].
Element Atoms At% Wt%
H 1.55 4.95 0.24
Na 0.167 0.533 0.59
Mg 2.6 8.3 9.71
Ca 1.4 4.46 8.6
Ti 0.015 0.0477 0.11
Mn 0.0154 0.0492 0.13
Fe 1 3.19 8.58
Al 0.335 1.07 1.39
Si 5.942 18.96 25.64
O 18.31 58.44 45.01

Measurement spectrum

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