Difference between revisions of "Pyrite"

Latest revision as of 12:21, 28 December 2022

Iron pyrite inlays
MFA# 26.20

Description

Iron pyrite

General name for any metal sulfide mineral. The name pyrite is also commonly used for one mineral form of Iron disulfide. Other types of pyrite include the sulfide salts of arsenic (Mispickel), copper (Chalcopyrite), cobalt (Smaltite) and tin. Ethanolamine thioglycollate treatments have been used to minimize the decomposition of pyritic specimens (Cornish 1984).

Synonyms and Related Terms

Fool's gold; iron disulfide; mundic; andodamus (Pliny); Pyrit (Deut.); pirita (Esp.); pyrite (Fr.); pyriet (Ned.); piryt (Pol.); pirite (Port.)

Risks

Can evolve low levels of sulfur dioxide.
Degrades in high humidity environments.

Physical and Chemical Properties

Insoluble in water
Magnetic after heating (iron pyrite)
Crystal system = cubic
Cleavage = poor
Fracture = uneven
Luster = metallic
Streak = greenish black to brown

Composition	FeS2
Mohs Hardness	6.0 - 6.5
Density	4.9-5.1 g/ml

Resources and Citations

L. Cornish, A.M. Doyle. "Use of Ethanolamine Thioglycollate in the Conservation of Pyritised Fossils" Palaeontology 27(2), 1984, 421-424.
Gem Identification Lab Manual, Gemological Institute of America, 2016.
G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 422
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
Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
Wikipedia: Pyrite (Accessed Sept. 14, 2005 and Dec 2022)
WebMinerals: Pyrite

@@ Line 1: / Line 1: @@
+[[File:Iron pyrite inlays-SC36631.jpg|thumb|Iron pyrite inlays<br>MFA# 26.20]]
 == Description ==
+[[File:pyriteemr1.jpg|thumb|Iron pyrite]]
+General name for any metal sulfide mineral. The name pyrite is also commonly used for one mineral form of [[iron%20disulfide|iron disulfide]]. Other types of pyrite include the sulfide salts of arsenic ([[mispickel|mispickel]]), copper ([[chalcopyrite|chalcopyrite]]), cobalt ([[smaltite|smaltite]]) and tin. Ethanolamine thioglycollate treatments have been used to minimize the decomposition of pyritic specimens (Cornish 1984).
-General name for any metal sulfide mineral. The name pyrite is also commonly used for one mineral form of [http://cameo.mfa.org/materials/fullrecord.asp?name=iron%20disulfide iron disulfide]. Other types of pyrite include the sulfide salts of arsenic ([http://cameo.mfa.org/materials/fullrecord.asp?name=mispickel mispickel]), copper ([http://cameo.mfa.org/materials/fullrecord.asp?name=chalcopyrite chalcopyrite]), cobalt ([http://cameo.mfa.org/materials/fullrecord.asp?name=smaltite smaltite]) and tin. Ethanolamine thioglycollate treatments have been used to minimize the decomposition of pyritic specimens (Cornish 1984).
+See also [[pyrrhotite|pyrrhotite]].
+[[[SliderGallery rightalign|pyriteRS.jpg~Raman (RASMIN)|Pyriteitaly2.jpg~Raman (U of Parma)|Pyrite Raman RRUFF R050190.png~Raman (RRUFF)]]]
-See also [http://cameo.mfa.org/materials/fullrecord.asp?name=pyrrhotite pyrrhotite].
 == Synonyms and Related Terms ==
 Fool's gold; iron disulfide; mundic; andodamus (Pliny); Pyrit (Deut.); pirita (Esp.); pyrite (Fr.); pyriet (Ned.); piryt (Pol.); pirite (Port.)
-== Hazards and Safety ==
+== Risks ==
-Can evolve low levels of sulfur dioxide.
-Degrades in high humidity environments.
+* Can evolve low levels of sulfur dioxide.
+* Degrades in high humidity environments.
+== Physical and Chemical Properties ==
-== Additional Information ==
+* Insoluble in water
+* Magnetic after heating (iron pyrite)
+* Crystal system = cubic
+* Cleavage = poor
+* Fracture = uneven
+* Luster = metallic
+* Streak = greenish black to brown
-° L. Cornish, A.M. Doyle. "Use of Ethanolamine Thioglycollate in the Conservation of Pyritised Fossils" Palaeontology 27(2), 1984, 421-424.
+{| class="wikitable"
+|-
+! scope="row"| Composition
+| FeS2
+|-
+! scope="row"| Mohs Hardness
+| 6.0 - 6.5
+|-
+! scope="row"| Density
+| 4.9-5.1 g/ml
+|}
-== Authority ==
+==Resources and Citations==
+* L. Cornish, A.M. Doyle. "Use of Ethanolamine Thioglycollate in the Conservation of Pyritised Fossils" Palaeontology 27(2), 1984, 421-424.
+* Gem Identification Lab Manual, Gemological Institute of America, 2016.
 * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 422
 * 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
 * Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982
 * Pam Hatchfield, ''Pollutants in the Museum Environment'', Archetype Press, London, 2002
+* Wikipedia: [https://en.wikipedia.org/wiki/Pyrite Pyrite] (Accessed Sept. 14, 2005 and Dec 2022)
+* WebMinerals: [http://webmineral.com/data/Pyrite.shtml Pyrite]
 [[Category:Materials database]]