Difference between revisions of "Pyrite"
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* Can evolve low levels of sulfur dioxide. | * Can evolve low levels of sulfur dioxide. | ||
* Degrades in high humidity environments. | * Degrades in high humidity environments. | ||
| + | == Physical and Chemical Properties == | ||
| + | * Insoluble in water. | ||
| + | * Magnetic after heating. | ||
| + | * Crystal system = isometric | ||
| + | * Cleavage = poor | ||
| + | * Fracture = uneven | ||
| + | * Luster = metallic | ||
| + | * Streak = greenish black to brown | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | ! scope="row"| Composition | ||
| + | | FeS2 | ||
| + | |- | ||
| + | ! scope="row"| Mohs Hardness | ||
| + | | 6.0 - 6.5 | ||
| + | |- | ||
| + | ! scope="row"| Melting Point | ||
| + | | 1171-1188 C | ||
| + | |- | ||
| + | ! scope="row"| Density | ||
| + | | 4.9-5.1 g/ml | ||
| + | |} | ||
==Resources and Citations== | ==Resources and Citations== | ||
* L. Cornish, A.M. Doyle. "Use of Ethanolamine Thioglycollate in the Conservation of Pyritised Fossils" Palaeontology 27(2), 1984, 421-424. | * 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 | * 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 | * 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 | * 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 | * 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] | ||
| + | * Jon Byler, Submitted information, Jan. 23, 2006. melting point = 1171 C (Lange's Handbook 1985), melting point=1188C (CRC 78th ed.) | ||
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 12:44, 28 December 2022
Description
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).
See also 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.)
Risks
- Can evolve low levels of sulfur dioxide.
- Degrades in high humidity environments.
Physical and Chemical Properties
- Insoluble in water.
- Magnetic after heating.
- Crystal system = isometric
- Cleavage = poor
- Fracture = uneven
- Luster = metallic
- Streak = greenish black to brown
| Composition | FeS2 |
|---|---|
| Mohs Hardness | 6.0 - 6.5 |
| Melting Point | 1171-1188 C |
| 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
- Jon Byler, Submitted information, Jan. 23, 2006. melting point = 1171 C (Lange's Handbook 1985), melting point=1188C (CRC 78th ed.)