Jarosewichite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Jarosewichite
Eugene Jarosewich
Formula:
Mn2+3Mn3+(AsO4)(OH)6
Colour:
Dark red brown
Lustre:
Sub-Vitreous, Resinous, Greasy
Hardness:
4
Specific Gravity:
3.66
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1982 by Pete J. Dunn, Donald R. Peacor, Peter B. Leavens, and William B. Simmons in honor of Eugene Jarosewich [January 6, 1926 - April 30, 2007 Washington, District of Columbia, USA] mineral and meteorite chemist, Department of Mineral Sciences, Smithsonian Institution. Jarosewich established analytical standard materials for microprobe analysis and established analytical standard materials for meteorites.
Dark brown tightly intergrown cushion-like to divergent clusters of crystals.
Unique Identifiers
Mindat ID:
2077
Long-form identifier:
mindat:1:1:2077:6
GUID
(UUID V4):
(UUID V4):
e5ad9ad7-0c1e-47e7-8119-b40ec7787850
IMA Classification of Jarosewichite
Approved
IMA Formula:
Mn3+Mn2+3(AsO4)(OH)6
First published:
1982
Classification of Jarosewichite
8.BE.70
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1
41.1.1.3
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p > 4:1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p > 4:1
20.8.5
20 : Arsenates (also arsenates with phosphate, but without other anions)
8 : Arsenates of Mn
20 : Arsenates (also arsenates with phosphate, but without other anions)
8 : Arsenates of Mn
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Jrw | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Jarosewichite
Sub-Vitreous, Resinous, Greasy
Transparency:
Translucent
Comment:
Subvitreous on fractured surfaces
Colour:
Dark red brown
Streak:
Reddish orange
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.66(4) g/cm3 (Measured) 3.70 g/cm3 (Calculated)
Optical Data of Jarosewichite
Type:
Biaxial (-)
RI values:
nα = 1.780(5) nβ = 1.795(5) nγ = 1.805(5)
2V:
Measured: 78° , Calculated: 78°
Birefringence:
0.025
Max Birefringence:
δ = 0.025
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v distinct
Optical Extinction:
Parallel. X = a, Y = b, Z = c.
Pleochroism:
Weak
Comments:
X = medium brownish red; Z = dark brownish red.
Comments:
Reactive with some Refractive index liquids.
Absorption: Z > X.
Absorption: Z > X.
Chemistry of Jarosewichite
Mindat Formula:
Mn2+3Mn3+(AsO4)(OH)6
Elements listed:
Common Impurities:
Mg
Crystallography of Jarosewichite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Cell Parameters:
a = 6.563 Å, b = 25.201 Å, c = 10.005 Å
Ratio:
a:b:c = 0.26 : 1 : 0.397
Unit Cell V:
1,654.77 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Rarely in rod-like crystals with crude "hexagonal" cross-section, also in tabular to flattened crystals, usually in slightly divergent groups.
Comment:
Point Group: 2/m 2/m 2/m, 222, or mm2.; Space Group: Cmmm, Cmm2 or C222.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.29 Å | (20) |
| 5.30 Å | (5) |
| 3.91 Å | (60) |
| 3.21 Å | (5) |
| 3.17 Å | (5) |
| 2.669 Å | (100) |
| 2.612 Å | (2) |
| 2.573 Å | (2) |
| 2.503 Å | (30) |
| 2.451 Å | (10) |
| 2.289 Å | (5) |
| 2.256 Å | (5) |
| 1.873 Å | (1) |
| 1.788 Å | (50) |
| 1.738 Å | (1) |
| 1.567 Å | (20) |
| 1.558 Å | (30) |
| 1.501 Å | (20) |
| 1.468 Å | (2) |
| 1.385 Å | (1) |
| 1.126 Å | (2) |
Comments:
ICDD 41-580
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Jarosewichite
General Appearance of Type Material:
Etched and vuggy granular dark olive green andradite and franklinite.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA, 109463.
National Museum of Natural History, Washington, D.C., USA, 148972.
National Museum of Natural History, Washington, D.C., USA, 148972.
Associated Minerals at Type Locality:
Reference:
Dunn, P.J., Peacor, D.R. Leavens, P.B., Simmons, W.B. (1982) Jarosewichite and a related phase: basic manganese arsenates of the chlorophoenicite group from Franklin, New Jersey. American Mineralogist: 67: 1043-1047.
Synonyms of Jarosewichite
Other Language Names for Jarosewichite
German:Jarosewichit
Spanish:Jarosewichita
Relationship of Jarosewichite to other Species
Member of:
Other Members of this group:
| Chlorophoenicite | (Mn,Mg)3Zn2(AsO4)(OH,O)6 | Mon. 2/m : B2/m |
| Magnesiochlorophoenicite | (Mg,Mn)3Zn2(AsO4)(OH,O)6 | Mon. 2/m : B2/m |
| Mineral E (of Dunn, et. al., 1982) | Bright translucent black needles showing typical chlorophoenicite habit. | Orth. mmm (2/m 2/m 2/m) |
| Peterchinite | Zn3Zn2(OH)6As[O3(OH)3] | Mon. 2/m : B2/m |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 8.BE.05 | Augelite | Al2(PO4)(OH)3 |
| 8.BE.10 | Grattarolaite | Fe3+3(PO4)O3 |
| 8.BE.15 | Cornetite | Cu3(PO4)(OH)3 |
| 8.BE.20 | Clinoclase | Cu3(AsO4)(OH)3 |
| 8.BE.25 | Arhbarite | Cu2Mg(AsO4)(OH)3 |
| 8.BE.25 | Gilmarite | Cu3(AsO4)(OH)3 |
| 8.BE.30 | Allactite | Mn2+7(AsO4)2(OH)8 |
| 8.BE.30 | Flinkite | Mn2+2Mn3+(AsO4)(OH)4 |
| 8.BE.30 | Raadeite | Mg7(PO4)2(OH)8 |
| 8.BE.30 | Argandite | Mn7(VO4)2(OH)8 |
| 8.BE.35 | Chlorophoenicite | (Mn,Mg)3Zn2(AsO4)(OH,O)6 |
| 8.BE.35 | Magnesiochlorophoenicite | (Mg,Mn)3Zn2(AsO4)(OH,O)6 |
| 8.BE.35 | Mineral E (of Dunn, et. al., 1982) | |
| 8.BE.40 | Gerdtremmelite | (Zn,Fe)(Al,Fe)2(AsO4)(OH)5 |
| 8.BE.45 | Dixenite | CuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6 |
| 8.BE.45 | Hematolite | (Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23 |
| 8.BE.45 | Kraisslite | Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16 |
| 8.BE.45 | Mcgovernite | Mn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21 |
| 8.BE.45 | Arakiite | (Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23 |
| 8.BE.45 | Turtmannite | (Mn,Mg)22.5Mg3-3x((V5+,As5+)O4)3(As3+O3)x(SiO4)3O5-5x(OH)20+x |
| 8.BE.45 | Carlfrancisite | Mn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42 |
| 8.BE.50 | Synadelphite | Mn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2O |
| 8.BE.55 | Holdenite | (Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8 |
| 8.BE.60 | Kolicite | Mn2+7Zn4(AsO4)2(SiO4)2(OH)8 |
| 8.BE.65 | Sabelliite | (Cu,Zn)2Zn(AsO4,SbO4)(OH)3 |
| 8.BE.75 | Theisite | Cu5Zn5(AsO4,SbO4)2(OH)14 |
| 8.BE.80 | Coparsite | Cu4(AsO4,VO4)O2Cl |
| 8.BE.85 | Waterhouseite | Mn2+7(PO4)2(OH)8 |
| 8.BE.90 | Vasilseverginite | Cu9O4(AsO4)2(SO4)2 |
Fluorescence of Jarosewichite
Not fluorescent in UV.
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Jarosewichite
mindat.org URL:
https://www.mindat.org/min-2077.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Jarosewichite
Localities for Jarosewichite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
USA | |
| King (n.d.) |
| Dunn et al. (1982) +1 other reference |
Quick NavTopAbout JarosewichiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA