1450) led a short-lived revival movement within the church in the fifteenth century called the Stephanite
Speaking of Alfredo Petrov (email@example.com), whose room at the InnSuites (and stand at the Main Show) is always rich in rare, slightly peculiar goodies, he had this year a small swarm of stephanite
specimens found, just a few weeks before the show, in the Porco mine, Potosi Bolivia--a silver mine inaugurated in 1549 by the conquistador Francisco Pizarro and still, Alfredo says, producing ore.
Pyrargyrite stockwork in siderite and quartz-encrusted cavities, together with acanthite, native silver, barite, kaolinite, and museum-quality specimens of polybasite and stephanite
were noted (Jeff Franzen and Ken Watson, pers.
Tamrat, "Some Notes on the Fifteenth-Century Stephanite
'Heresy' in the Ethiopian Church," Rassegna di studi etopici, Vol.
In the first decade of the 20th century, the Las Chispas mine near Arizpe in Sonora produced some of Mexico's largest and best specimens of polybasite crystals, large clusters of "poker chip" stephanite
crystals, fine acanthite crystal clusters and a few very fine pyrargyrite specimens.
In recent years the Fresnillo area has produced remarkable examples of the silver sulfosalts pyrargyrite, stephanite
During the 1890s and the first few years of the 20th century the Las Chispas mine near Arizpe produced some of the world's finest specimens of polybasite, pyrargyrite and stephanite
. Ore pockets filled with breccia fragments covered by sparkling crystals of various silver minerals dazzled the miners, hence the naming of the mine.
, Xanthoconite and Proustite, Cobalt, Ontario, Canada, no.
They're all here, in multiple samples ranging in quality from "study grade" to absolutely superb: Freiberg acanthite and stephanite
, Schneeberg proustite and erythrite and roselite and uranium-bearing species, Andreasberg pyrargyrite and dyscrasite and fluorite and pink apophyllite, Siegerland malachite and anglesite and millerite and galena, Schwarzwald fluorite and barite and silver, Obermoschel cinnabar and moschellandsbergite, Ems pyromorphite and cerussite, Johanngeorgenstadt mimetite, Ohrenstock hausmannite, Fichtelgebirge topaz and microcline and herderite, Ehrenfriedersdorf cassiterite and fluorapatite, Ilfeld manganite, Ronneburg whewellite, Hagendorf phosphates ...
Especially appealing are a kermesite from Que Que, Zimbabwe, and a stephanite
from Arizpe, Sonora, Mexico with 3-cm crystals, donated by A.
The largest acanthite crystal on the specimen is no more than 7 mm across, but on it rests a sharp, lustrous crystal of stephanite
He also got apophyllite and valencianite from Guanajuato, and had spent a week in Zacatecas (10) buying specimens of proustite, pyrargyrite, stephanite
and native silver.