Main page: http://minerals.gps.caltech.edu/index.html

Short description: database from CalTech focused on transmission spectra of minerals as single crystals (Visible Near-IR: 0.3-2.5 µm), KBr pellets (Mid-IR: 2.5-50µm) and Polyethylene pellets (Far-IR: 15-200µm)

Access to data: Mineral Spectroscopy Server

Sample types: Minerals: single crystals, KBr pellets and Polyethylene pellets

Spectra types: transmission spectra over the Visible and near-IR (0.3-2.5 µm), Mid-IR (2.5-50 µm) and Far-IR (15-200µm)

Search tools: Static lists of mineral names

Data format: ASCII (.txt)

Preview format: GIF (.gif)

Metadata: limited: Mineral, Sample ID, Collection location, Sample description and image, Sample thickness, polarization,..

Metadata format: in HTML page (.html) and part in header of data file (.txt)

Download: individual download

Notes: Frequently missing data files …