Pyrite, Quartz, Calcite

The original label identifies this specimen as “chalcopyrite,” though the crystal form and colour suggest otherwise. The habit and brassy tone are more consistent with pyrite; however, if it were confirmed as chalcopyrite, it would represent quite the find and a fine example. In any case, the specimen appears to be an exceptionally large sulphide crystal exposed from a calcite vein in limestone and carefully acid-etched from the surrounding matrix to reveal its full form.

The piece is a striking example of classic Québec mineralogy and comes from the old stock collection of Robert Labbé. It originates from Sainte-Justine-de-Newton, Québec, most likely the Trudeau Quarry, a locality known for producing well-crystallized sulphide minerals within calcite veins.

The impressive size, sharp form, and careful preparation make this an outstanding cabinet specimen and a worthy representative example from this notable Québec locality.