Nagyagite with Rhodochrosite

Unknown Owner

Lustrous somewhat iridescent platy crystals of nagyagite measuring to 0.5 cm in size scattered throughout this pink crystallized rhodochrosite matrix. Typical of these slight damage present, this still in good condition. From the type locality for the species, these Romanian classics are not often found available on the market today. This particular specimen at one time was part of the collection of American mineralogist Arthur Montgomery.The Josefs Mine, located in Sacaramb within the Hunedoara County of Romania, is a legendary locality in the history of mineralogy and gold mining. Geologically, it is situated within a Neogene volcanic complex characterized by a spectacular array of epithermal veins that host rare gold and silver tellurides. The mine is world-famous as the primary source of nagyagite, a complex lead-gold-antimony-tellurium-sulfide mineral that typically forms as distinctive, dark grey to black bladed crystals with a metallic luster. Historically, mining in the Sacaramb area (formerly known as Nagyag) began in 1746 after the accidental discovery of gold-bearing ores by a local peasant. The Josefs Mine was a major component of this district, which was extensively developed under Austrian administration throughout the 18th and 19th centuries. Large-scale operations continued for over 250 years, making the region one of the most productive gold-telluride districts in Europe, until modern industrial mining eventually ceased in the early 2000s.Arthur Montgomery (1909-1999) was a prominent American mineralogist and geologist known for his extensive field work and academic contributions. Geologically, his career was defined by the exploration of complex pegmatite systems and hydrothermal deposits, most notably the Harding Mine in New Mexico, which he operated for essential metals during World War II. Montgomery is credited with the discovery and description of several rare minerals, including montgomeryite, and he played a pivotal role in recovering world-class specimens from iconic localities like the Red Cloud Mine. Historically, he transitioned from a successful career as a field collector and miner to become a respected Professor of Geology at Lafayette College from 1951 to 1975. Beyond his research, Montgomery was a founding benefactor of the Mineralogical Record and spent his later years dedicated to philanthropy and spiritual life in the American Southwest.