***Raw data of spectroscopic analyses (XRD, FTIR, ATR-FTIR) of adhesive residues from Steenbokfontein Cave (South Africa)***
Authors: Alessandro Aleo*, Antonieta Jerardino, Rivka Chasan, Myrto Despotopoulou, Dominique J.M. Ngan-Tillard, Ruud W.A. Hendrikx, Geeske H.J. Langejans

*a.aleo@tudelft.nl

***General Introduction***
The dataset contains data collected as part of the Ancient Adhesives project under the European Union’s Horizon 2020 research and innovation programme Grant Agreement No. 678 804151 (Grant holder G.H.J.L.). 
It is being made public to act as supplementary data for a publication and for other researchers to use this data in their own work.

The data in this dataset were collected at TUDelft in 2022 and 2023. 

***Methodological Information***
X-ray diffraction (XRD)
X-ray diffraction (XRD) was performed at the Department of Materials Science & Engineering (TU Delft, NL) using a Bruker D8 Discover diffractometer and Eiger-2 500k 2D-detector. Cu Kα radiation and an Incoatec 1μS microfocus tube were used for the measurements at 50 kV, 1000 μA. The equipment includes a UBC 1.0 mm collimator, a scatter screen, and a UMC 1516 sample stage. The software for equipment control and data evaluation was the Bruker DiffracSuite.EVA vs 5.2. For each sample, we measured at least one residue spot and one spot on the rock substrate. 

Fourier-Transform Infrared microspectroscopy (micro-FTIR) and attenuated total reflectance (ATR)
Fourier-Transform Infrared microspectroscopy (micro-FTIR) and attenuated total reflectance (ATR) analyses were performed at the Delft Aerospace Structures and Materials Laboratory (TU Delft, NL). For the micro-FTIR, a Perkin Elmer Spotlight 400 FTIR microscope and a Perkin Elmer Frontier FT-IR spectrometer were used. The software for equipment control and data evaluation was the Spectrum IR. The measurements were performed in reflectance mode with a resolution of 4 cm-1, 16 accumulations per measurement, a spot size of 100x100 μm, and a wavelength range of 4000-600 cm-1. We used a Perkin Elmer Spectrum 100 FT-IR Spectrometer with a diamond crystal for the ATR analysis. The software for equipment control and data evaluation was the Spectrum IR. The measurements were performed with a resolution of 4 cm-1, 16 accumulations per measurement, and a wavelength range of 4000-600 cm-1. 

***Data specific info***
This dataset contains:
-Raw data for XRD of 11 archaeological objects named: SBF4; SBF5; SBF9; SBF10; SBF14; SBF15; SBF17; SBF20; SBF21; SBF23; SBF24. The filfe format is .raw
-Raw data for FTIR of 6 archaeological objects named SBF4; SBF9; SBF10; SBF20; SBF21; SBF24. The file format is .csv 
-Raw data for ATR-FTIR of 1 archaeological object named SBF14. The file format is .csv

The acronym SBF stands for Steenbokfontein, a cave in the Western Cape province (South Africa) where the objects were found. 
The data included in this dataset has been organized per specimen. For each specimen, more than one point was measured as indicated in the file name. 
The file name includes the unique ID of the object + the analytical technique + the number of the scan (at least 2 per object). For example: SBF14_ATR_scan01
