page_title: Freieslebenite
section_title: Physical properties
hierarchical_section_title: Freieslebenite / Physical properties
caption_attribution_description: English: Freieslebenite Locality: Neue Hoffnung Gottes Mine, Bräunsdorf, Freiberg District, Erzgebirge, Saxony, Germany (Locality at mindat.org) Size: 5.6 x 4.4 x 1.9 cm. This beautiful little specimen features extremely sharp twinned Freieslebenite crystals to 4mm (as a cluster), perched on crystallized quartz matrix. It was once in the Museum of Bonn in Germany, and their label notes that they obtained it from the famous German dealers August Krantz (1809-1872) and his son, who lived in Bonn from 1850 on. Deutsch: Freieslebenit Fundort: Neue Hoffnung Gottes Mine, Bräunsdorf, Landkreis Freiberg, Erzgebirge, Sachsen, Deutschland (Fundort bei mindat.org) Größe: 5.6 x 4.4 x 1.9 cm.
context_page_description: Freieslebenite is a sulfosalt mineral composed of antimony, lead, and silver. Sulfosalt minerals are complex sulfide minerals with the formula: AₘBₙSₚ. The formula of freieslebenite is AgPbSbS₃.
  Freieslebenite was discovered in approximately 1773 in the Himmelsfurst mines of Freiberg, Saxony, Germany. The mineral was initially called Schilf-Glaserz; however, in 1845 it was given the current name Freieslebenite after the Mining Commissioner of Saxony, Johann Carl Freiesleben.
context_section_description: Freieslebenite has a metallic luster and is opaque in transparency. The general colors for freieslebenite are gray, silver and white. It has a whitish-gray streak with a hardness of 2.5 on the Mohs scale. It has an imperfect cleavage and an irregular fracture. The density of freieslebenite is 6.20-6.23 g/cm³.
caption: Cluster of twinned freieslebenite crystals on quartz matrix from Neue Hoffnung Gottes Mine, Bräunsdorf, Freiberg District, Erzgebirge, Saxony, Germany (Size: 5.6 x 4.4 x 1.9 cm)
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