As there has been no satisfactory method developed to measure and record the orientation of the opaque ore‐minerals, a technique is proposed whereby the orientation of many of the opaque minerals can be measured and statistically recorded on the conventional contoured petrofabric diagram.The method is limited to minerals that have a planar element related to a crystallographic direction that will permit measurement and subsequent recording of the orientation of that crystallographic direction. Some planar elements that can be readily used are: Cleavage; twinning; exsolution plates, when they exhibit relatively sharp boundaries and uniform orientation; crystal faces; replacement or alteration along crystallographic directions; and compositional banding or timing. In many cases etching with the proper solvent will bring out these structures and greatly facilitate the measurements.