of Minerals,2nd ed.,1990) OPTIC PROP.(Sinkankas66)Ģ5 - University of Colorado - Mineral Structure DataĪdam's Minerals Google Search for Corundumĭakota Matrix Minerals Google Search for CorundumĮxcalibur Mineral Corp. (04.03.01)Corundum-Hematite group (Rhombohedral: R-3c)Ġ4.CB.05 04 - OXIDES (Hydroxides, V vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodateĠ4.C - Metal:Oxygen = 2:3, 3:5, and SimilarĠ4.CB.05 Auroantimonate* AuSbO3 Ortho ? OrthoĠ4.CB.05 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3Ġ4.CB.05 Romanite* (Fe,U,Pb)2(Ti,Fe)O4 Trig ? Trig GRapi = 0 (Gamma Ray American Petroleum Institute Units) Corundum is Not Radioactive PE Corundum = 1.54 barns/electron U=PE Corundum x rElectron Density= 6.08 barns/cc. Tabular - Form dimensions are thin in one direction.ĬI meas= 0.089 (Poor) - where the CI = (1-K P Dmeas/K C)ĬI calc= 0.08 (Poor) - where the CI = (1-K P Dcalc/K C) Prismatic - Crystals Shaped like Slender Prisms (e.g. Tough - Difficult to break apart as shown by fibrous minerals and most metals.Įuhedral Crystals - Occurs as well-formed crystals showing good external form. View Additional jPOWD Structure files for Corundum Lewis J, Schwarzenbach D, Flack H D, Acta Crystallographica, Section A, 38 (1982) p.733-739, Electric field gradients and charge density in corundum alpha-Al2O3 Warning: this large pop-up is very compute intensive and

Location: Jagdalak (Jagdalek Jagdalik) Ruby Mine, Sorobi District, Konar (Kunar Konarh Konarha Nuristan) Province, Afghanistan.Ī = 4.751, c = 12.97, Z = 6 V = 253.54 Den(Calc)= 4.01 Location: Mikro-Lakka Emery deposit, Kerketeas Mt, Sámos Island, Aegean Islands Department, Greece.Ĭomments: Bright red ruby corundum crystals in white marble matrix.

Probably derived from the Sanskrit, kuruvinda, meaning 'ruby.'Ĭomments: Thin-Section (Plane Polarized Light) of a brown, twinned zincohögbomite-2N2S crystal with blue corundum. Contact and regionally metamorphosed rocks.

Corundum blue