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| {{Short description|Mineral}} | |||
| {{sandbox notice}} | |||
| {{Infobox mineral | {{Infobox mineral | ||
| | name = Sarkinite | | name = Sarkinite | ||
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| | boxbgcolor = | | boxbgcolor = | ||
| | image = Sarkinite-MD-18492a.jpg | | image = Sarkinite-MD-18492a.jpg | ||
| | imagesize = | | imagesize = 260px | ||
| | caption = | | caption = | ||
| | formula = Mn<sub>2</sub>(AsO<sub>4</sub>)(OH)<ref name=mindat>{{cite web|title=Sarkinite|url=http://www.mindat.org/min-3535.html|publisher=Mindat| |
| formula = Mn<sub>2</sub>(AsO<sub>4</sub>)(OH)<ref name=mindat>{{cite web|title=Sarkinite|url=http://www.mindat.org/min-3535.html|publisher=Mindat|access-date=May 28, 2012}}</ref> | ||
| | IMAsymbol = Srk<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref> | |||
| | strunz = | |||
| | dana = | |||
| | symmetry = | |||
| | unit cell = | |||
| | molweight = | | molweight = | ||
| | |
| strunz = 8.BB.15<ref name=mindat/> | ||
| | |
| dana = 41.6.3.3<ref name=mindat/> | ||
| | system = | | system = ] | ||
| | class = Prismatic (2/m) <br/><small>(same ])</small> | |||
| | symmetry = ''P2m''<ref name=mindat/> | |||
| | unit cell = a = 12.7795(13) ] <br/>b = 13.6127(14) Å <br/>c = 10.2188(11) Å <br/>β = 108.834(2)°; Z = 16<ref name=mindat/> | |||
| | color = Red to yellow<ref name=mindat/> | |||
| | habit = Tabular<ref name=webmineral>{{cite web|title=Sarkinite|url=http://webmineral.com/data/Sarkinite.shtml|publisher=Webmineral|access-date=May 29, 2012}}</ref> or granular<ref name=mindat/> | |||
| | twinning = | | twinning = | ||
| | cleavage = | | cleavage = Distinct on {100}<ref name=mindat/> | ||
| | fracture = | | fracture = Irregular/Uneven, ]<ref name=mindat/> | ||
| | tenacity = | | tenacity = | ||
| | mohs = | | mohs = 4–5<ref name=mindat/> | ||
| | luster = | | luster = Greasy<ref name=mindat/> | ||
| | polish = | | polish = | ||
| | refractive = n<sub>α</sub>=1.793, n<sub>β</sub>=1.807, n<sub>γ</sub>=1.809<ref name=mindat/> | |||
| | refractive = | |||
| | opticalprop = | | opticalprop = Biaxial (−)<ref name=mindat/> | ||
| | birefringence = | | birefringence = δ = 0.016<ref name=mindat/> | ||
| | 2V = | | 2V = 83° (measured)<ref name=mindat/> | ||
| | dispersion = | | dispersion = r > v or r < v<ref name=mindat/> | ||
| | pleochroism = | | pleochroism = Weak<ref name=mindat/> | ||
| | fluorescence= | | fluorescence= | ||
| | absorption = | | absorption = X > Z > Y<ref name=mindat/> | ||
| | streak = | | streak = Red to yellow<ref name=mindat/> | ||
| | gravity = | | gravity = | ||
| | density = | | density = 4.08 to 4.18 g/cm<sup>3</sup> (measured)<ref name=mindat/> | ||
| | melt = | | melt = | ||
| | fusibility = | | fusibility = | ||
| | diagnostic = | | diagnostic = | ||
| | solubility = | | solubility = Readily soluble in dilute acids<ref name=mindat/> | ||
| | diaphaneity = Semitransparent<ref name=handbook>{{cite web|title=Sarkinite|url=http://www.handbookofmineralogy.org/pdfs/sarkinite.pdf|work=Handbook of Mineralogy|publisher=Mineral Data Publishing|access-date=May 30, 2012}}</ref> | |||
| | diaphaneity = | |||
| | other = | | other = | ||
| | references = | | references = | ||
| }} | }} | ||
| '''Sarkinite''', synonymous with '''chondrarsenite''' and '''polyarsenite''', is a mineral with formula Mn<sub>2</sub>(AsO<sub>4</sub>)(OH). The mineral is named for the ] word ''σάρκιυος'', meaning made of flesh, for its red color and greasy ]. The mineral was first noted in Sweden in 1865 as chondrarsenite, though not identified as sarkinite until 1885. | |||
| '''Sarkinite''' is a mineral with formula Mn<sub>2</sub>(AsO<sub>4</sub>)(OH). | |||
| ==Description== | |||
| Sarkinite is red to yellow in color. It occurs as thick tabular crystals, short prismatic crystals, or has a granular ]. Sarkinite sometimes aggregates into a roughly spherical shape. Sarkinite is a member of the ].<ref name=mindat/> | |||
| The mineral occurs in manganese-rich lenses in quartzitic chlorite ]s, metamorphosed zinc ore bodies, and rarely in metamorphosed ]–] ore bodies.<ref name=handbook/> | |||
| ==Structure== | |||
| Sarkinite is ] with ] and ]<ref name=mindat/> and is a ] of ].<ref name=H113>Halenius, p. 113.</ref> The crystal structure consists of MnO<sub>4</sub>(OH)<sub>2</sub> ], MnO<sub>4</sub>(OH) ]s, and AsO<sub>4</sub> ].<ref name=DN246>Dal Negro, p. 246.</ref> | |||
| ==History== | |||
| *http://webmineral.com/data/Sarkinite.shtml | |||
| In 1885, two similar minerals were discovered in Sweden. Polyarsenite was found in ] and named by Igelström for its high arsenic content. Sarkinite was discovered in Pajsberg, ], and named by A. Sjögren after the Greek word ''σάρκιυος'', meaning made of flesh, in reference to the blood-red color and greasy luster. It was considered likely that the two minerals were identical.<ref>{{Cite report |author=Smithsonian Institution |year=1886 |title=Annual Report of the Board of Regents of the Smithsonian Institution Showing the Operations, Expenditures, and Condition of the Institution to July, 1885 |url=https://books.google.com/books?id=WLYAAAAAYAAJ&pg=PA701 |publisher=] |page=701 }}</ref> A study in 1980 showed that polyarsenite and chondrarsenite, discovered in 1865, were in fact both sarkinite.<ref>{{cite journal|last=Dunn|first=Pete J.|title=On the composition of some sarkinites|journal=Mineralogical Magazine|date=March 1980|volume=43|issue=329|url=http://rruff.geo.arizona.edu/doclib/MinMag/Volume_43/43-329-681.pdf|access-date=May 29, 2012|page=681|doi=10.1180/minmag.1980.043.329.22|bibcode=1980MinM...43..681D|s2cid=129159875 }}</ref> | |||
| *http://www.minersoc.org/pages/Archive-MM/Volume_62/62-1-113.pdf | |||
| *http://onlinelibrary.wiley.com/doi/10.1002/zaac.200570022/abstract | |||
| *http://franklin-sterlinghill.com/dunn/ch25/sarkinite.stm | |||
| *http://www.springerlink.com/content/kr12m681223h66x2/ | |||
| ==Distribution== | |||
| {{As of|2012}}, sarkinite has been found in Austria, France, Italy, Japan, Kazakhstan, Romania, Sweden, Switzerland, and the United States.<ref name=mindat/> | |||
| ==Association== | |||
| Sarkinite has been found in association with:<ref name=handbook/> | |||
| Harstigen mine, Sweden | |||
| *], ], ], ], ] | |||
| Sjö mine, Sweden | |||
| *], ], ], ] | |||
| Ködnitz Valley, Austria | |||
| *], ], ], ], ], ] | |||
| Falotta mine, Switzerland | |||
| *], ], ], manganoan ], ], ] | |||
| Sterling Hill, New Jersey, US | |||
| *], ], ], ], ], ], ], ], ], ], ], ], ] | |||
| ==References== | ==References== | ||
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| ===Bibliography=== | ===Bibliography=== | ||
| *{{cite journal|last1=Halenius|first1=Ulf|last2=Westlund|first2=Erika|title=Manganese valency and the colour of the Mn2AsO4(OH) polymorphs eveite and sarkinite|journal=Mineralogical Magazine|date=February 1998|volume=62|issue=1|pages=113–119|url=http://www.minersoc.org/pages/Archive-MM/Volume_62/62-1-113.pdf|doi=10.1180/002646198547503|bibcode=1998MinM...62..113H|s2cid=95357747}} | |||
| *{{cite journal|last1=Dal Negro|first1=A.|last2=Giuseppetti|first2=G.|last3=Pozas|first3=J. M. Martin|title=The crystal structure of sarkinite, Mn2AsO4(OH)|journal=Mineralogy and Petrology|year=1974|volume=21|issue=3–4|pages=246–260|doi=10.1007/BF01081034|bibcode = 1974TMPM...21..246D }} | |||
| ==External links== | ==External links== | ||
| {{commonscat|Sarkinite}} | {{commonscat-inline|Sarkinite}} | ||
| ] | |||
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Latest revision as of 15:11, 17 December 2024
Mineral| Sarkinite | |
|---|---|
 | |
| General | |
| Category | Arsenate minerals |
| Formula (repeating unit) | Mn2(AsO4)(OH) |
| IMA symbol | Srk |
| Strunz classification | 8.BB.15 |
| Dana classification | 41.6.3.3 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | P2m |
| Unit cell | a = 12.7795(13) Å b = 13.6127(14) Å c = 10.2188(11) Å β = 108.834(2)°; Z = 16 |
| Identification | |
| Color | Red to yellow |
| Crystal habit | Tabular or granular |
| Cleavage | Distinct on {100} |
| Fracture | Irregular/Uneven, Conchoidal |
| Mohs scale hardness | 4–5 |
| Luster | Greasy |
| Streak | Red to yellow |
| Diaphaneity | Semitransparent |
| Density | 4.08 to 4.18 g/cm (measured) |
| Optical properties | Biaxial (−) |
| Refractive index | nα=1.793, nβ=1.807, nγ=1.809 |
| Birefringence | δ = 0.016 |
| Pleochroism | Weak |
| 2V angle | 83° (measured) |
| Dispersion | r > v or r < v |
| Absorption spectra | X > Z > Y |
| Solubility | Readily soluble in dilute acids |
Sarkinite, synonymous with chondrarsenite and polyarsenite, is a mineral with formula Mn2(AsO4)(OH). The mineral is named for the Greek word σάρκιυος, meaning made of flesh, for its red color and greasy luster. The mineral was first noted in Sweden in 1865 as chondrarsenite, though not identified as sarkinite until 1885.
Description
Sarkinite is red to yellow in color. It occurs as thick tabular crystals, short prismatic crystals, or has a granular habit. Sarkinite sometimes aggregates into a roughly spherical shape. Sarkinite is a member of the Wagnerite Group.
The mineral occurs in manganese-rich lenses in quartzitic chlorite schists, metamorphosed zinc ore bodies, and rarely in metamorphosed Fe–Mn ore bodies.
Structure
Sarkinite is isostructural with triploidite and wolfeite and is a dimorph of eveite. The crystal structure consists of MnO4(OH)2 octahedra, MnO4(OH) trigonal bipyramids, and AsO4 tetrahedra.
History
In 1885, two similar minerals were discovered in Sweden. Polyarsenite was found in Grythyttan and named by Igelström for its high arsenic content. Sarkinite was discovered in Pajsberg, Persberg, and named by A. Sjögren after the Greek word σάρκιυος, meaning made of flesh, in reference to the blood-red color and greasy luster. It was considered likely that the two minerals were identical. A study in 1980 showed that polyarsenite and chondrarsenite, discovered in 1865, were in fact both sarkinite.
Distribution
As of 2012, sarkinite has been found in Austria, France, Italy, Japan, Kazakhstan, Romania, Sweden, Switzerland, and the United States.
Association
Sarkinite has been found in association with:
Harstigen mine, Sweden
Sjö mine, Sweden
Ködnitz Valley, Austria
Falotta mine, Switzerland
- Brandtite, braunite, grischunite, manganoan berzeliite, rhodochrosite, tilasite
Sterling Hill, New Jersey, US
- Adamite, allactite, barite, brandtite, copper, euchroite, eveite, kraisslite, manganese oxides, parabrandtite, rhodochrosite, serpierite, willemite
References
- ^ "Sarkinite". Mindat. Retrieved May 28, 2012.
- Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- "Sarkinite". Webmineral. Retrieved May 29, 2012.
- ^ "Sarkinite" (PDF). Handbook of Mineralogy. Mineral Data Publishing. Retrieved May 30, 2012.
- Halenius, p. 113.
- Dal Negro, p. 246.
- Smithsonian Institution (1886). Annual Report of the Board of Regents of the Smithsonian Institution Showing the Operations, Expenditures, and Condition of the Institution to July, 1885 (Report). Government Printing Office. p. 701.
- Dunn, Pete J. (March 1980). "On the composition of some sarkinites" (PDF). Mineralogical Magazine. 43 (329): 681. Bibcode:1980MinM...43..681D. doi:10.1180/minmag.1980.043.329.22. S2CID 129159875. Retrieved May 29, 2012.
Bibliography
- Halenius, Ulf; Westlund, Erika (February 1998). "Manganese valency and the colour of the Mn2AsO4(OH) polymorphs eveite and sarkinite" (PDF). Mineralogical Magazine. 62 (1): 113–119. Bibcode:1998MinM...62..113H. doi:10.1180/002646198547503. S2CID 95357747.
- Dal Negro, A.; Giuseppetti, G.; Pozas, J. M. Martin (1974). "The crystal structure of sarkinite, Mn2AsO4(OH)". Mineralogy and Petrology. 21 (3–4): 246–260. Bibcode:1974TMPM...21..246D. doi:10.1007/BF01081034.
External links
Media related to Sarkinite at Wikimedia Commons