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- Pyrargyrite abstract "Pyrargyrite is a sulfosalt mineral consisting of silver sulfantimonide, Ag3SbS3. Known also as dark red silver ore or ruby silver, it is an important source of the metal.It is closely allied to, and isomorphous with, the corresponding sulfarsenide known as proustite or light red silver ore. Ruby silver or red silver ore (German Rotgiiltigerz) was mentioned by Georg Agricola in 1546, but the two species so closely resemble one another that they were not completely distinguished until chemical analyses of both were made.Both crystallize in the ditrigonal pyramidal (hemimorphic-hemihedral) class of the rhombohedral system, possessing the same degree of symmetry as tourmaline. Crystals are perfectly developed and are usually prismatic in habit; they are frequently attached at one end, the hemimorphic character being then evident by the fact that the oblique striations on the prism faces are directed towards one end only of the crystal. Twinning according to several laws is not uncommon. The hexagonal prisms of pyrargyrite are usually terminated by a low hexagonal pyramid or by a drusy basal plane.The color of pyrargyrite is usually greyish-black and the lustre metallic-adamantine; large crystals are opaque, but small ones and thin splinters are deep ruby-red by transmitted light, hence the name, from the Greek pyr and argyros, "fire-silver" in allusion to color and silver content, given by E. F. Glocker in 1831. The streak is purplish-red, thus differing markedly from the scarlet streak of proustite and affording a ready means of distinguishing the two minerals. The Mohs hardness is 2.75, and the specific gravity 5.85. The refractive indices (nω=3.084 nε=2.881) and birefringence (δ=0.203) are very high. There is no very distinct cleavage and the fracture is conchoidal. The mineral occurs in metalliferous veins with calcite, argentiferous galena, native silver, native arsenic, &c. The best crystallized specimens are from Sankt Andreasberg in the Harz, Freiberg in Saxony, and Guanajuato in Mexico. It is not uncommon in many silver mines in the United States, but rarely as distinct crystals; and it has been found in some Cornish mines.Although the red silver ores afford a good example of isomorphism, they rarely form mixtures; pyrargyrite rarely contains as much as 3% of arsenic replacing antimony, and the same is true of antimony in proustite. Dimorphous with pyrargyrite and proustite respectively are the rare monoclinic species pyrostilpnite or fireblende (Ag3SbS3) and xanthoconite (Ag3AsS3): these four minerals thus form an isodimorphous group.".
- Pyrargyrite thumbnail Mineraly.sk_-_pyrargyrit.jpg?width=300.
- Pyrargyrite wikiPageID "1687872".
- Pyrargyrite wikiPageLength "4769".
- Pyrargyrite wikiPageOutDegree "40".
- Pyrargyrite wikiPageRevisionID "674487418".
- Pyrargyrite wikiPageWikiLink Angstrom.
- Pyrargyrite wikiPageWikiLink Antimony.
- Pyrargyrite wikiPageWikiLink Arsenic.
- Pyrargyrite wikiPageWikiLink Basal_plane.
- Pyrargyrite wikiPageWikiLink Calcite.
- Pyrargyrite wikiPageWikiLink Category:Antimony_minerals.
- Pyrargyrite wikiPageWikiLink Category:Silver_minerals.
- Pyrargyrite wikiPageWikiLink Category:Sulfosalt_minerals.
- Pyrargyrite wikiPageWikiLink Category:Trigonal_minerals.
- Pyrargyrite wikiPageWikiLink Cornwall.
- Pyrargyrite wikiPageWikiLink Crystal_structure.
- Pyrargyrite wikiPageWikiLink Crystal_twinning.
- Pyrargyrite wikiPageWikiLink E._F._Glocker.
- Pyrargyrite wikiPageWikiLink Fireblende.
- Pyrargyrite wikiPageWikiLink Freiberg.
- Pyrargyrite wikiPageWikiLink Freiberg,_Saxony.
- Pyrargyrite wikiPageWikiLink Galena.
- Pyrargyrite wikiPageWikiLink Georg_Agricola.
- Pyrargyrite wikiPageWikiLink Georgius_Agricola.
- Pyrargyrite wikiPageWikiLink Greek_language.
- Pyrargyrite wikiPageWikiLink Guanajuato.
- Pyrargyrite wikiPageWikiLink H-M_symbol.
- Pyrargyrite wikiPageWikiLink Harz.
- Pyrargyrite wikiPageWikiLink Hermann–Mauguin_notation.
- Pyrargyrite wikiPageWikiLink Mexico.
- Pyrargyrite wikiPageWikiLink Mineral.
- Pyrargyrite wikiPageWikiLink Mohs_hardness.
- Pyrargyrite wikiPageWikiLink Mohs_scale_of_mineral_hardness.
- Pyrargyrite wikiPageWikiLink Monoclinic.
- Pyrargyrite wikiPageWikiLink Monoclinic_crystal_system.
- Pyrargyrite wikiPageWikiLink Ore.
- Pyrargyrite wikiPageWikiLink Proustite.
- Pyrargyrite wikiPageWikiLink Pyrostilpnite.
- Pyrargyrite wikiPageWikiLink Rhombohedral.
- Pyrargyrite wikiPageWikiLink Sankt_Andreasberg.
- Pyrargyrite wikiPageWikiLink Saxony.
- Pyrargyrite wikiPageWikiLink Silver.
- Pyrargyrite wikiPageWikiLink Space_group.
- Pyrargyrite wikiPageWikiLink Specific_gravity.
- Pyrargyrite wikiPageWikiLink Sulfosalt.
- Pyrargyrite wikiPageWikiLink Sulfosalt_minerals.
- Pyrargyrite wikiPageWikiLink Tourmaline.
- Pyrargyrite wikiPageWikiLink Trigonal.
- Pyrargyrite wikiPageWikiLink Trigonal_crystal_system.
- Pyrargyrite wikiPageWikiLink United_States.
- Pyrargyrite wikiPageWikiLink Xanthoconite.
- Pyrargyrite wikiPageWikiLink File:Pyragyrite09.jpg.
- Pyrargyrite wikiPageWikiLinkText "Pyrargyrite".
- Pyrargyrite wikiPageWikiLinkText "dark-red silver ore".
- Pyrargyrite wikiPageWikiLinkText "pyrargyrite".
- Pyrargyrite birefringence "δ = 0.203".
- Pyrargyrite category Sulfosalt.
- Pyrargyrite category Sulfosalt_minerals.
- Pyrargyrite cleavage "Distinct on {101}, imperfect on {012}".
- Pyrargyrite color "Deep red to red gray".
- Pyrargyrite diaphaneity "Translucent to nearly opaque".
- Pyrargyrite formula "Ag3SbS3".
- Pyrargyrite fracture "Conchoidal, uneven".
- Pyrargyrite gravity "5.82".
- Pyrargyrite habit "Include prismatic crystals with rhombohedral and scalenohedral faces forming terminations. massive, granular".
- Pyrargyrite hasPhotoCollection Pyrargyrite.
- Pyrargyrite luster "Adamantine".
- Pyrargyrite mohs "2.5".
- Pyrargyrite name "Pyrargyrite".
- Pyrargyrite opticalprop "Uniaxial".
- Pyrargyrite other "Darkens upon exposure to light; crystals are frequently striated".
- Pyrargyrite pleochroism "Distinct".
- Pyrargyrite refractive "nω = 3.084 nε = 2.881".
- Pyrargyrite streak "dark cherry red".
- Pyrargyrite strunz "2".
- Pyrargyrite symmetry H-M_symbol.
- Pyrargyrite symmetry Hermann–Mauguin_notation.
- Pyrargyrite symmetry "Space group: R 3c".
- Pyrargyrite symmetry "Trigonal ditrigonal pyramidal".
- Pyrargyrite system Trigonal.
- Pyrargyrite system Trigonal_crystal_system.
- Pyrargyrite tenacity "Brittle".
- Pyrargyrite twinning "Complex to lammellar".
- Pyrargyrite unitCell "a = 11.047 Å, c = 8.719 Å; Z=6".
- Pyrargyrite wikiPageUsesTemplate Template:1911.
- Pyrargyrite wikiPageUsesTemplate Template:Commons.
- Pyrargyrite wikiPageUsesTemplate Template:Infobox_mineral.
- Pyrargyrite wikiPageUsesTemplate Template:Ref_improve.
- Pyrargyrite wikiPageUsesTemplate Template:Reflist.
- Pyrargyrite subject Category:Antimony_minerals.
- Pyrargyrite subject Category:Silver_minerals.
- Pyrargyrite subject Category:Sulfosalt_minerals.
- Pyrargyrite subject Category:Trigonal_minerals.
- Pyrargyrite hypernym Mineral.
- Pyrargyrite type ChemicalSubstance.
- Pyrargyrite type Mineral.
- Pyrargyrite type ChemicalObject.
- Pyrargyrite type Thing.
- Pyrargyrite type Q7946.