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-2016-10018-A

AM-2016-10018-A · Garnet, var. almandinearchived

physical & structuralrev. 2
designationGarnet, var. almandine
chemical formulaFe₃Al₂(SiO₄)₃
classificationNesosilicate / Garnet group
crystal systemCubic
mohs hardness6.5 – 7.5
density (g/cm³)4.38
colourWine red, dodecahedral
type localityTsumeb, Otjikoto, Namibia
raman spectroscopy532 nm · pass A
200400600800100012001400Raman shift (cm⁻¹)intensity (arb.)3515519151050
λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mmfig. 1 · raman.am-2016-10018-a.svg

reported peaks (cm⁻¹): 351, 551, 915, 1050

notessubmitter remarks + registry

Photographic record retained. Specimen temperature held at lab ambient throughout intake.