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-2012-10003-A

AM-2012-10003-A · Quartzunverified

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
designationQuartz
chemical formulaSiO₂
classificationTectosilicate / Quartz group
crystal systemTrigonal
mohs hardness7
density (g/cm³)2.66
colourColourless, transparent
type localityTouissit, Oriental, Morocco
raman spectroscopy532 nm · pass A
200400600800100012001400Raman shift (cm⁻¹)intensity (arb.)12635569680810831162
λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mmfig. 1 · raman.am-2012-10003-a.svg

reported peaks (cm⁻¹): 126, 355, 696, 808, 1083, 1162

notessubmitter remarks + registry

Specimen accompanied by a single typewritten card listing the locality and the year of collection. Original collection number illegible due to ink fade.