public catalogue · open access · last index pass 2026-05-08 08:14:02 UTChost: cat-pub-04 · build 0.14.3-prototype · rev rA9F2
overviewcatalogueAM-2017-10013-A

AM-2017-10013-A · Rutileunverified

The classification below is preliminary. Spectroscopic confirmation is incomplete; values shown reflect the most recent analytical pass and may be revised without notice.
physical & structuralrev. 1
designationRutile
chemical formulaTiO₂
classificationOxide / Rutile group
crystal systemTetragonal
mohs hardness6 – 6.5
density (g/cm³)4.21
colourWeakly zoned, black, prismatic crystals
type localityToroku mine, Miyazaki, Japan
raman spectroscopy532 nm · pass A
200400600800100012001400Raman shift (cm⁻¹)intensity (arb.)145236446613
λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mmfig. 1 · raman.am-2017-10013-a.svg

reported peaks (cm⁻¹): 145, 236, 446, 613

notessubmitter remarks + registry

Macroscopic appearance consistent with rutile; no surface alteration observed at the time of intake.