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-2015-10001-B

AM-2015-10001-B · Scheelite, anomaly under reviewunverified

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. 5
designationScheelite, anomaly under review
chemical formulaCaWO₄
classificationTungstate
crystal systemTetragonal
mohs hardness4.5 – 5
density (g/cm³)5.96
colourPale yellow, fluorescent
type localityKongsberg, Buskerud, Norway
raman spectroscopy532 nm · pass B
200400600800100012001400Raman shift (cm⁻¹)intensity (arb.)334412798910
λ_excitation: 532 nm · acq. 3 × 10 s · grating 1800 g/mmfig. 1 · raman.am-2015-10001-b.svg

reported peaks (cm⁻¹): 334, 412, 798, 910

notessubmitter remarks + registry

Coherent drift of the 911 cm⁻¹ Raman peak by approximately ±0.3 cm⁻¹ over a four-hour acquisition window. Drift reverses when the specimen is held in darkness. The behaviour is consistent with the pattern reported for AM-2017-03404-C.