SAFFLORITE and SILVER, CASTLE MINE, GOWGANDA ONTARIO, CANADA (small cabinet)

Safflorite is a rare mineral composed of cobalt iron arsenide, represented by the chemical formula (Co,Fe)As2. While pure safflorite is identified as CoAs2, it typically contains iron. This mineral belongs to the loellingite group, which features a substitution series of arsenides; loellingite contains over fifty percent iron, while rammelsbergite contains more than fifty percent nickel. Additionally, there exists a parallel series of antimonide minerals.

Safflorite and its related minerals crystallize in the orthorhombic system, exhibiting opaque gray to white massive or radiating forms, with Clinosafflorite displaying monoclinic symmetry. It has a Mohs hardness of 4.5 and a specific gravity ranging from 6.9 to 7.3, with twinning being common, often resulting in star-shaped twins.

First described in 1835 from the Schneeberg District in Germany, safflorite is typically found alongside other arsenide minerals in silver mining areas and can alter to the arsenate erythrite in secondary environments.

Silver, represented by the symbol Ag (from the Latin word argentum, which originates from the Proto-Indo-European term h₂erǵ meaning 'shiny, white'), is a chemical element with the atomic number 47. This soft, lustrous transition metal is renowned for its exceptional electrical and thermal conductivity, as well as its high reflectivity, surpassing that of all other metals. In nature, silver occurs in the Earth's crust in its native form, as well as in alloys with gold and other metals, and within minerals like argentite and chlorargyrite. The majority of silver production comes as a byproduct during the refining processes of copper, gold, lead, and zinc.