Pyrrhotite

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Pyrrhotite

Description

A bronze-like mineral composed of iron sulfide. Pyrrhotite is slightly magnetic and tarnishes with time. It occurs near pyrite (disulfide iron disulfide), chaclopyrite, or magnetite deposits. Pyrrhotite has been found in Rumania (Kisbanya), Austria, Italy (Trentino), Germany (Saxony, Bavaria, Andreas-Berg), Switzerland, Norway (Kongsberg), Sweden, Brazil, Canada (Bristish Columbia, Ontario), Mexico (Chihuahua) and the U.S. (Maine, Connecticut, New York, Pennsylvania, Tennessee, California).

Synonyms and Related Terms

magnetic pyrite

Other Properties

Luster = metallic. Streak = grayish-black. Magnetic. Tarnish = dark brown

Composition Fe(1-x)Sx e.g., Fe5S6
Mohs Hardness 3.5 - 4.5
Density 4.58-4.64

Additional Information

Mineralogy Database: Pyrrhotite

Authority

  • G.S.Brady, G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 541
  • Encyclopedia Britannica, http://www.britannica.com Comment: "pyrrhotite" Encyclopdia Britannica [Accessed December 11, 2001]...
  • C.W.Chesterman, K.E.Lowe, C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
  • Susan E. Schur, Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976

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