Jarosewichite Mineral Data

General Jarosewichite Information

Chemical Formula:

Mn++3Mn+++(AsO4)(OH)6

Composition:

Molecular Weight = 460.72 gm

Manganese 47.70 % Mn 46.19 % MnO / 17.13 % Mn₂O₃

Arsenic 16.26 % As 24.94 % As₂O₅

Hydrogen 1.31 % H 11.73 % H₂O

Oxygen 34.73 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺₃Mn³⁺(AsO₄)(OH)₆

Environment:

Metamorphosed Zn-Mn deposit.

IMA Status:

Approved IMA 1982

Locality:

Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Eugene Jaroswich (1926-), chief chemist, Department of Mineral Sciences, National Museum of Natural History, Smithsonian Institution.

Name Pronunciation:

Jarosewichite + Pronunciation

Jarosewichite Image

Images:

Click Here for Larger Jarosewichite Image

Jarosewichite Flinkite

Comments: Radial divergent spray of thick prismatic jarosewichite crystals with bladed flinkite crystals. (AmMin, v67:1043).
Location: Franklin mine, Franklin, SussexC ounty, New Jersey, USA. Scale: Scale Bar 100 µm.
© American Mineralogist

Jarosewichite Crystallography

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

By Intensity(I/I_o): 2.669(1), 3.91(0.6), 1.788(0.5),

Physical Properties of Jarosewichite

Color:

Dark red.

Optical Properties of Jarosewichite

Gladstone-Dale:

CI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2144,KPDmeas= 0.2168,KC= 0.2228
Ncalc = 1.82

Calculated Properties of Jarosewichite

Electron Density:

Bulk Density (Electron Density)=3.48 gm/cc
note: Specific Gravity of Jarosewichite =3.66 gm/cc.

Fermion Index:

Fermion Index = 0.00016866
Boson Index = 0.99983134

Photoelectric:

PE_{Jarosewichite}= 23.50 barns/electron
U=PE_{Jarosewichite} x rElectron Density= 81.77 barns/cc.

Radioactivity:

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

Jarosewichite Classification

Dana Class:

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

(41.01)where (A++)m (XO4)p Zq, with m:p>4:1

(41.01.01)Phoenicite Group

41.01.01.01 Chlorophoenicite (Mn,Mg)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

41.01.01.02 Magnesiochlorophoenicite (Mg,Mn)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

41.01.01.03 Jarosewichite Mn3Mn(AsO4)(OH)6 C 222,C mm2,C 2m2(/n) Ortho

Strunz Class:

08.BE.70 08 - PHOSPHATES, ARSENATES, VANADATES

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

08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1

08.BE.70 Jarosewichite Mn3Mn(AsO4)(OH)6 C 222,C mm2,C 2m2(/n) Ortho

Other Jarosewichite Information

See Also:

Links to other databases for Jarosewichite :
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

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Print or Cut-and-Paste your Jarosewichite Specimen Label here :

Jarosewichite

Mn++3Mn+++(AsO4)(OH)6
Dana No: 41.01.01.03 Strunz No: 08.BE.70
Locality:

Notes: