Large crystals that appear to be pyrrhotite are usually hexagonal pseudomorphs of pyrite after pyrrhotite. |
Additional weak silicic solutions formed thin encrustations of quartz on the calcite in delicate encrustation pseudomorphs. |
They noted that good pseudomorphs of limonite after pyrite, both as cubes and as pyritohedra, are common, especially in bodies of massive pyrite. |
The original cordierite crystals were sixling twins that give the pseudomorphs a flower-shaped cross section. |
Amazing and fantastic forms of representatives of the mineral world are displayed in the exhibitions dedicated to crystals, mineral aggregates, and pseudomorphs. |
It pseudomorphs after sérandite and offers some of the most exceptional crystal specimens at Mont Saint-Hilaire in sizes up to 20cm. |