AM-2024-10004-A · Tourmaline (schorl)unverified The classification below is preliminary. Spectroscopic confirmation is incomplete; values shown reflect the most recent analytical pass and may be revised without notice.
physical & structural rev. 4
designation Tourmaline (schorl) chemical formula NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄ classification Cyclosilicate / Tourmaline group crystal system Trigonal mohs hardness 7 – 7.5 density (g/cm³) 3.11 colour Black with greenish termination type locality Ratnapura, Sabaragamuwa, Sri Lanka
raman spectroscopy 532 nm · pass A
200 400 600 800 1000 1200 1400 Raman shift (cm⁻¹) intensity (arb.) 220 364 1061 λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mm fig. 1 · raman.am-2024-10004-a.svg
reported peaks (cm⁻¹): 220, 364, 1061
notes submitter remarks + registry
Photographic record retained. Specimen temperature held at lab ambient throughout intake.
provenance
accession AM-2024-10004-A submitted 2024-05-23 last modified 2026-04-11 submitter (hash) 550109 record revision 4 status unverified proof-hash cc07acebfcd74058a1cc38b61c5b759de79aea08f2758d501f1608b154225a09 citation
anonymousmaterials.com (n.d.). Record AM-2024-10004-A: Tourmaline (schorl). Public catalogue accession. Retrieved from https://anonymousmaterials.com/sample/AM-2024-10004-A
files
filename size raman.am-2024-10004-a.svg 14 KB meta.am-2024-10004-a.json 2 KB photo.am-2024-10004-a.jpg —
Original photographic plate not retained in the public mirror; consult the registry for high-resolution scans.