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-2019-10010-A

AM-2019-10010-A · Olivine (forsterite)archived

physical & structuralrev. 2
designationOlivine (forsterite)
chemical formula(Mg,Fe)₂SiO₄
classificationNesosilicate / Olivine group
crystal systemOrthorhombic
mohs hardness6.5 – 7
density (g/cm³)3.35
colourSlightly tarnished, pale greenish-yellow
type localityN'Chwaning II mine, Northern Cape, South Africa
raman spectroscopy532 nm · pass A
200400600800100012001400Raman shift (cm⁻¹)intensity (arb.)823858
λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mmfig. 1 · raman.am-2019-10010-a.svg

reported peaks (cm⁻¹): 823, 858

notessubmitter remarks + registry

Submitter cited the type locality. Specimen retained for reference; no chain-of-custody documentation available beyond the submission packet.