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-2009-10011-A

AM-2009-10011-A · Garnet, var. almandinearchived

physical & structuralrev. 1
designationGarnet, var. almandine
chemical formulaFe₃Al₂(SiO₄)₃
classificationNesosilicate / Garnet group
crystal systemCubic
mohs hardness6.5 – 7.5
density (g/cm³)4.35
colourFaintly deep red-brown
type localityTsumeb, Otjikoto, Namibia
raman spectroscopy532 nm · pass A
200400600800100012001400Raman shift (cm⁻¹)intensity (arb.)3525531052
λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mmfig. 1 · raman.am-2009-10011-a.svg

reported peaks (cm⁻¹): 352, 553, 1052

notessubmitter remarks + registry

Crystals up to 13 mm on edge, with euhedral faces. On dolomite matrix.