Mineralpedia Details for Argentopyrite
Named for the silver content of the mineral after the Latin word for “silver,” argentum, and for the similarity to pyrite. Argentopyrite can be found in silver-bearing hydrothermal veins in association with arsenic, proustite, pyrargyrite, pyrostilpnite, xanthoconite, sternbergite, stephanite, pyrite, nickelskutterudite, dolomite, calcite, and quartz. It is a rare mineral that occurs in localities in the Czech Republic, Germany, England, Australia, Japan, Bolivia, and Canada, among a few others.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/argentopyrite.pdf
Argentopyrite from Jachymov, Erzgegirge, Bohemia, Czech Republic
- Special Info
- Type Locality
Crystals of Argentopyrite to about 1mm showing cyclic twinning producing stout pseudohexagonal crystals with a violet tarnish. The pryramidal terminations are sometimes rough and some are perfect. Associated are Sternbergite as thick tabular, striated crystals to 1mm with a goldish tarnish
Argentopyrite from St. Andreasberg dist., Harz, Lower Saxony, Germany
The specimen is mostly Pyrargyrite but is full of micro 1mm and less bronze to metallic gray Argentopyrite crystals. The photos do not do it justice. The crystals are orthorhombic twinned pseudohexagonal prisms with prominent re-entry angles appearing as deep striations much like aragonite.