AM-2020-10010-A · Gypsumwithdrawn This record has been withdrawn from active circulation. Historical metadata is retained for citation purposes only. Contact the registry before referencing this accession in new publications.
physical & structural rev. 2
designation Gypsum chemical formula CaSO₄·2H₂O classification Sulfate crystal system Monoclinic mohs hardness 1.5 – 2 density (g/cm³) 2.35 colour Colourless, transparent type locality Panasqueira, Castelo Branco, Portugal
raman spectroscopy 532 nm · pass A
200 400 600 800 1000 1200 1400 Raman shift (cm⁻¹) intensity (arb.) 417 618 670 λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mm fig. 1 · raman.am-2020-10010-a.svg
reported peaks (cm⁻¹): 417, 618, 670
notes submitter remarks + registry
Photographic record retained. Routine intake; no anomalies noted.
provenance
accession AM-2020-10010-A submitted 2020-05-24 last modified 2026-05-08 submitter (hash) 60bbcb record revision 2 status withdrawn proof-hash 3897612daf1bffa7dc54e35b15098164822025f43f94b30444b96c654a7d76c2 citation
anonymousmaterials.com (n.d.). Record AM-2020-10010-A: Gypsum. Public catalogue accession. Retrieved from https://anonymousmaterials.com/sample/AM-2020-10010-A
files
filename size raman.am-2020-10010-a.svg 1.6 KB meta.am-2020-10010-a.json 628 B photo.am-2020-10010-a.jpg 78 KB
Photographic plate retained in the public mirror; full-resolution scan available on request.