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-2013-10020-A

AM-2013-10020-A · Hematitearchived

physical & structuralrev. 1
designationHematite
chemical formulaFe₂O₃
classificationOxide / Hematite group
crystal systemTrigonal
mohs hardness5 – 6
density (g/cm³)5.20
colourWeakly zoned, steel grey to black, red streak
type localityBahia, Brazil
raman spectroscopy532 nm · pass A
200400600800100012001400Raman shift (cm⁻¹)intensity (arb.)2242462934966121319
λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mmfig. 1 · raman.am-2013-10020-a.svg

reported peaks (cm⁻¹): 224, 246, 293, 496, 612, 1319

notessubmitter remarks + registry

Crystals up to 8 mm on edge, in random orientation. On dolomite matrix.