Freieslebenite is a rare sulfide mineral of antimony, lead and silver with formula AgPbSbS₃ and molecular weight of 533.02 gm. It is an opaque non-fluorescent mineral which has a hydrothermal origin. It is metallic, with a specific gravity of 6.3 and a Mohs hardness of 2.5 - about that of a finger nail. It is non-magnetic and is usually gray in colour. It has indistinct cleavage, and is brittle and has a conchoidal fracture. It can have a white or gray streak. It crystallizes in the monoclinic system. In chemistry, a sulfide (sulphide in British) is a chemical compound or combination of sulfur with an oxidation number of -2, with another chemical element or a radical thereof. ... This article is about minerals in the geologic sense; for nutrient minerals see dietary mineral; for the band see Mineral (band). ... General Name, Symbol, Number antimony, Sb, 51 Chemical series metalloids Group, Period, Block 15, 5, p Appearance silvery lustrous grey Atomic mass 121. ... General Name, Symbol, Number lead, Pb, 82 Chemical series poor metals Group, Period, Block 14, 6, p Appearance bluish white Atomic mass 207. ... General Name, Symbol, Number silver, Ag, 47 Chemical series transition metals Group, Period, Block 11, 5, d Appearance lustrous white metal Atomic mass 107. ... See also Avogadros number Atomic mass unit Dalton (unit) External links Learning by Simulations Calculation of Molecular Formulas from Molecular Masses Categories: Chemistry stubs | Mass | Chemical properties ... A substance or object that is opaque is neither transparent nor translucent. ... Fluorescence induced by exposure to ultraviolet light in vials containing various sized Cadmium selenide (CdSe) quantum dots. ... Hydrothermal circulation in the oceans is the passage of the water through mid-ocean Ridge (MOR) systems. ... For alternative meanings see metal (disambiguation). ... Relative density (also known as specific gravity) is a measure of the density of a material. ... Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer. ... This article discusses the anatomical nail. ... In physics, magnetism is a phenomenon by which materials exert an attractive or repulsive force on other materials. ... The word gray is also spelled grey: see Grey for topics with this spelling. ... Cleavage, in mineralogy, is the tendency of crystalline materials to split along definite planes, creating smooth surfaces, of which there are several named types: Basal cleavage: cleavage parallel to the base of a crystal, or to the plane of the lateral axes. ... A material is brittle if it is subject to fracture when subjected to stress i. ... A conchoidal fracture is produced when some types of mineral, such as obsidian and flint, are broken. ... White is a color (more accurately it contains all the colors of the visible spectrum and is sometimes described as an achromatic color—black is the absence of color) that has high brightness but zero hue. ... The term streak is used in several ways: Streaking, the act of running around nude in public places. ... Crystal (disambiguation) Insulin crystals A crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions. ... In crystallography, the monoclinic crystal system is one of the 7 lattice point groups. ...

History

Freieslebenite is normally found in Europe, usually in Romania and Germany. It was discovered in 1845, and is named after Johann Karl Freiesleben (1774 - 1846), Mining Commissioner of Saxony, Germany. A satellite composite image of Europe Europe is the worlds second-smallest continent in terms of area, with an area of 10,600,000 km² (4,140,625 square miles), making it larger than Australia only. ... 1845 was a common year starting on Wednesday (see link for calendar). ... 1774 was a common year starting on Saturday (see link for calendar). ... 1846 was a common year starting on Thursday (see link for calendar). ... The El Chino Mine located near Silver City, New Mexico is an open-pit copper mine This article is about mineral extraction. ... With an area of 18,413 km² and a population of 4. ...

References

• Mindat
• WebMineral
• EuroMineral