SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Frieseite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Ag2Fe5S8
Specific Gravity:
4.217
Crystallographically similar to sternbergite with a a:b:c = 0.5969:1:0.7352 and the forms c{101}, b{010}, w{301}, r{102}, {101}, {043}, {131}. Twinned like sternbergite; however, thick tabular habit and differing composition.

Dana considered frieseite to be identical to sternbergite.
Peacock (1942) states that the X-ray powder diffraction photographs of frieseite show only the pattern of pyrite with weak extra lines corresponding to the strongest lines of sternbergite. He assumes that frieseite alters to oriented sternbergite and pyrite.
Peacock (1969) mentions that a specimen of frieseite from the US NMNH gave a pattern for argentopyrite.
Quellmalz (1970) found that frieseite is a partial pseudomorph of pyrite after sternbergite (or argentopyrite).


Hide all sections | Show all sections

Physical Properties of FrieseiteHide

Density:
4.217 g/cm3 (Measured)    

Chemical Properties of FrieseiteHide

Formula:
Ag2Fe5S8

Other Language Names for FrieseiteHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for FrieseiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Vrba (1878) Zeitschrift für Kristallographie: 2: 153.
Vrba (1879) Zeitschrift für Kristallographie: 3: 186.
Peacock (1942): Am. Min. 27, 229.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 247.
Peacock (1969): Am. Min. 54, 1198.
Quellmalz, W. (1970): Mineralogische Untersuchungen zum Problem der "Silberkiese". Dissertation, Universität Berlin, xx pp. (in German).
Deqing Xu (1993): Mode of occurrence and recovery prospects of associated silver in the Xiaolong greisen deposit. Jiangxi Nonferrous Metals 7(4), 171-175 (in Chinese).

Internet Links for FrieseiteHide

Localities for FrieseiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
  • Jiangxi
    • Ganzhou
      • Xingguo Co.
Deqing Xu (1993): Jiangxi Nonferrous Metals 7(4), 171-175
Czech Republic
 
  • Karlovy Vary Region
    • Karlovy Vary District
Vrba (1878) Zeitschrift für Kristallographie: 2: 153.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: August 18, 2019 01:49:54 Page generated: June 13, 2019 16:45:29
Go to top of page