Tremolite reflectance spectrum, 20±2°C, Pejcic et al. 2022 (EP2022-5804)
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Measurement details
| Description | VNIR-SWIR reflectance spectrum of Tremolite 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 | Tremolite [ ☐Ca2(Mg5.0-4.5FeII0.0-0.5)Si8O22(OH)2 ] |
| Specimen temperature | 20±2°C |
| Analysis 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 | 0.0603 … 0.368 absolute reflectance |
| Related measurement | Tremolite reflectance spectrum, IR illum., 20±2°C, Pejcic et al. 2021 (EP2021-1148) |
| Line | OH 2ν: 7147 cm-1 |
| Download | Actinolite_Reflectance_2.txt [45.4 kB] |
Specimen details
| Name | MES177 Tremolite / Actinolite |
| Owner | NVCL, AuScope Limited - ARRC Collection |
| Locality | Spoo Ness, Lunda Wick, Unst, Shetland Islands, United Kingdom |
| Link to CMR Specify database | https://cmr-specify.csiro.au/specify/bycatalog/CMR-MS/2024-MS-0000000011 |
| Phase abundance (QXRD) |
|
| Other measurements | Reflectance XRD |
Specimen image
Image of Actinolite, Clinochlore (var. Fe), Quartz and Tremolite in specimen 'MES177 Tremolite / Actinolite' [NVCL, AuScope Limited], from Spoo Ness, Lunda Wick, Unst, Shetland Islands, United Kingdom.
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Composition
| Element | At% | Wt% |
|---|---|---|
| H | 4.91 | 0.25 |
| Mg | 12.19 | 14.96 |
| Ca | 4.88 | 9.87 |
| Si | 19.51 | 27.66 |
| O | 58.51 | 47.27 |
| Total | 100 | 100 |