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	\| 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\|accessdate=May 28, 2012}}</ref>		\| 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\|accessdate=May 28, 2012}}</ref>
	\| strunz =		\| strunz = 8.BB.15<ref name=mindat/>
	\| dana =		\| dana = 41.6.3.3<ref name=mindat/>
	\| symmetry =		\| symmetry =
			\| unit cell = a=12.7795(13) Å<br>b=13.6127(14) Å<br>c=10.2188(11) Å<br>β = 108.834(2)°<br>Z=16<ref name=mindat/>
	\| unit cell =
	\| molweight =		\| molweight =
	\| color =		\| 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\|accessdate=May 29, 2012}}</ref>
	\| habit =
	\| system =		\| system = ]<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 =		\| diaphaneity =
	\| other =		\| other =
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	}}		}}
	'''Sarkinite''' is a mineral with formula Mn<sub>2</sub>(AsO<sub>4</sub>)(OH).		'''Sarkinite''' is a mineral with formula Mn<sub>2</sub>(AsO<sub>4</sub>)(OH).

			==Description==
			Sarkinite is a ] of ].<ref name=H113>Halenius, p. 113.</ref>

			==History==


			==Distribution==
			{{As of\|2012}}, sarkinite has been found in Austria, France, Italy, Japan, Kazakhstan, Romania, Sweden, Switzerland, and the United States of America.<ref name=mindat/>





	*http://webmineral.com/data/Sarkinite.shtml
	*http://www.minersoc.org/pages/Archive-MM/Volume_62/62-1-113.pdf		*http://www.minersoc.org/pages/Archive-MM/Volume_62/62-1-113.pdf
	*http://onlinelibrary.wiley.com/doi/10.1002/zaac.200570022/abstract		*http://onlinelibrary.wiley.com/doi/10.1002/zaac.200570022/abstract
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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\|year=1998\|month=February\|volume=62\|issue=1\|pages=113–119\|url=http://www.minersoc.org/pages/Archive-MM/Volume_62/62-1-113.pdf}}

	==External links==		==External links==
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Revision as of 01:30, 29 May 2012

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Sarkinite

General
Category	Arsenate minerals
Formula (repeating unit)	Mn₂(AsO₄)(OH)
Strunz classification	8.BB.15
Dana classification	41.6.3.3
Crystal system	Monoclinic
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
Cleavage	Distinct on {100}
Fracture	Irregular/Uneven, Conchoidal
Mohs scale hardness	4–5
Luster	Greasy
Streak	Red to yellow
Density	4.08 to 4.18 g/cm (measured)
Optical properties	Biaxial (-)
Refractive index	n_α=1.793, n_β=1.807, n_γ=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

Description

Sarkinite is a polymorph of eveite.

History

Distribution

As of 2012, sarkinite has been found in Austria, France, Italy, Japan, Kazakhstan, Romania, Sweden, Switzerland, and the United States of America.

References

^ "Sarkinite". Mindat. Retrieved May 28, 2012.
"Sarkinite". Webmineral. Retrieved May 29, 2012.
Halenius, p. 113.

Bibliography

Halenius, Ulf; Westlund, Erika (1998). "Manganese valency and the colour of the Mn2AsO4(OH)polymorphs eveite and sarkinite" (PDF). Mineralogical Magazine. 62 (1): 113–119. {{cite journal}}: Unknown parameter |month= ignored (help)