Sarkinite Mineral Data

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General Sarkinite Information

Chemical Formula:

Mn++2(AsO4)(OH)

Composition:

Molecular Weight = 265.80 gm

Manganese 41.34 % Mn 53.38 % MnO

Arsenic 28.19 % As 43.24 % As₂O₅

Hydrogen 0.38 % H 3.39 % H₂O

Oxygen 30.10 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺₂(AsO₄)(OH)

Environment:

As analog of triploidite.

IMA Status:

Valid Species (Pre-IMA) 1885

Locality:

Hartigen mine, Pajsberg, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek for "made of flesh" in allusion to the blood-red color.

Name Pronunciation:

Sarkinite + Pronunciation

Synonym:

ICSD 4285

PDF 14-214

Sarkinite Image

Images:

Sarkinite

Comments: Reddish brown crystalline aggregates of sarkinite on matrix.
Location: Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Sarkinite Crystallography

Axial Ratios:

a:b:c =0.9364:1:0.7511

Cell Dimensions:

a = 12.68, b = 13.54, c = 10.17, Z = 16; beta = 108.733° V = 1,653.56 Den(Calc)= 4.27

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.04(1), 3.17(1), 3.29(0.7),

Forms:

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Forms: ( 0 2 1) ( 1 2 0) ( 1 4 1) ( 1 0 1) ( 1 0 0) ( 0 0 1)

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Crystal Structure:

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Dal Negro A , Giuseppetti G , Pozas J M M , Tschermaks Mineralogische und Petrographische Mitteilungen , 21 (1974) p.246-260, The crystal structure of sarkinite, Mn2AsO4(OH)

Physical Properties of Sarkinite

Cleavage:

{100} Distinct

Color:

Yellow, Dark red, Reddish yellow.

Density:

4.08 - 4.18, Average = 4.13

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Greasy (Oily)

Streak:

yellow

Optical Properties of Sarkinite

Gladstone-Dale:

CI meas= -0.041 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1881,KPDmeas= 0.1944,KC= 0.1867
Ncalc = 1.76 - 1.8

Optical Data:

Biaxial (-), a=1.793, b=1.807, g=1.809, bire=0.0160, 2V(Calc)=40, 2V(Meas)=83.

Calculated Properties of Sarkinite

Electron Density:

Bulk Density (Electron Density)=3.98 gm/cc
note: Specific Gravity of Sarkinite =4.27 gm/cc.

Fermion Index:

Fermion Index = 0.0001450315
Boson Index = 0.9998549685

Photoelectric:

PE_Sarkinite= 30.49 barns/electron
U=PE_Sarkinite x rElectron Density= 121.49 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sarkinite is Not Radioactive

Sarkinite Classification

Dana Class:

41.06.03.03 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.06)where (A)2 (XO4) Zq

(41.06.03)Wolfeite Group

41.06.03.01 Wolfeite (Fe,Mn)2(PO4)(OH) P 2₁/a 2/m

41.06.03.02 Triploidite (Mn,Fe)2(PO4)(OH) P 2₁/a 2/m

41.06.03.03 Sarkinite Mn2(AsO4)(OH) P 2₁/a 2/m

41.06.03.04 Stanekite! Fe(Mn,Fe,Mg)(PO4)O P 2₁/a 2/m

41.06.03.06 Joosteite! (Mn,Mn,Fe)2(PO4)O I2/a 2/m

Strunz Class:

08.BB.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1

08.BB.15 Sarkinite Mn2(AsO4)(OH) P 2₁/a 2/m

08.BB.15 Stanekite! Fe(Mn,Fe,Mg)(PO4)O P 2₁/a 2/m

08.BB.15 Triploidite (Mn,Fe)2(PO4)(OH) P 2₁/a 2/m

08.BB.15 Wagnerite (Mg,Fe)2(PO4)F P 2₁/a 2/m

08.BB.15 Wolfeite (Fe,Mn)2(PO4)(OH) P 2₁/a 2/m

08.BB.15 Joosteite! (Mn,Mn,Fe)2(PO4)O I2/a 2/m

Other Sarkinite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Sarkinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Sarkinite

Mn++2(AsO4)(OH)
Dana No: 41.06.03.03 Strunz No: 08.BB.15
Locality:

Notes: