Eveite
A valid IMA mineral species
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About Eveite
Eve
Formula:
Mn2+2(AsO4)(OH)
Colour:
Apple-green, pale yellow
Hardness:
3½ - 4
Specific Gravity:
3.67
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1967 by Paul Brian Moore for the Biblical Eve, in comparison to the isostructural adamite.
Dimorph of:
Isostructural with:
Unique Identifiers
Mindat ID:
1427
Long-form identifier:
mindat:1:1:1427:0
Similar Names
| Avaite | A variety of Native Platinum | (Pt,Ir) |
| Sveite | A valid IMA mineral species | (K3-x◻x)Al8(NO3)6O8Cl4 · nH2O |
IMA Classification of Eveite
Approved
IMA Formula:
Mn2+2As5+O4(OH)
Approval year:
1966
First published:
1968
Classification of Eveite
8.BB.30
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
41.6.6.4
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
20.8.2
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 for Standard |
|---|---|---|
| Ev | 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 Eveite
Transparency:
Transparent
Colour:
Apple-green, pale yellow
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Cleavage:
Imperfect/Fair
fair on {101}
fair on {101}
Density:
3.67 g/cm3 (Measured) 3.75 g/cm3 (Calculated)
Optical Data of Eveite
Type:
Biaxial (+)
RI values:
nα = 1.700(5) nβ = 1.715(5) nγ = 1.732(10)
2V:
Measured: 65° , Calculated: 88°
Max. Birefringence:
δ = 0.032
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
relatively strong r < v
Pleochroism:
Visible
Comments:
X=Z= green
Y= yellow
Y= yellow
Chemistry of Eveite
Mindat Formula:
Mn2+2(AsO4)(OH)
Element Weights:
Elements listed:
Crystallography of Eveite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnnm
Setting:
Pnnm
Cell Parameters:
a = 8.57(1) Å, b = 8.77(1) Å, c = 6.27(1) Å
Ratio:
a:b:c = 0.977 : 1 : 0.715
Unit Cell V:
471.25 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Thick tabular, usually composite, barrel-shaped, sheaf-like to 2 mm.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0018489 | Eveite | Yang Y W, Stevenson R A, Siegel A M, Downs G W (2011) Redetermination of eveite, Mn2AsO4(OH), based on single-crystal X-ray diffraction data Acta Crystallographica E67 i68-i68 |  | 2011 | Langban, Filipstad, Varmland, Sweden | 0 | 293 |
| 0000183 | Eveite | Moore P B, Smyth J R (1968) Crystal chemistry of the basic manganese arsenates: III. The crystal structure of eveite, Mn2(OH)(AsO4) American Mineralogist 53 1841-1845 |  | 1968 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.10 Å | (70) |
| 5.09 Å | (80) |
| 4.39 Å | (100) |
| 3.14 Å | (40) |
| 3.058 Å | (90) |
| 2.797 Å | (50) |
| 2.528 Å | (60) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Geological Setting:
Metamorphosed Mn orebody, stratiform zinc ores.
Type Occurrence of Eveite
General Appearance of Type Material:
Apple-green tabular or sheaflike crystals encrusting cavities and fractures in hausmannite, Fe-Mn oxides and carbonates.
Place of Conservation of Type Material:
Swedish Natural History Museum, no. NRMS 390274.
Geological Setting of Type Material:
Metamorphosed Mn orebody.
Associated Minerals at Type Locality:
Synonyms of Eveite
Other Language Names for Eveite
Relationship of Eveite to other Species
Member of:
Other Members of Olivenite Group:
| Adamite | Zn2(AsO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnnm |
| Auriacusite | Fe3+Cu2+(AsO4)O | Orth. mmm(2/m2/m2/m) : Pnnm |
| Libethenite | Cu2(PO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnnm |
| Olivenite | Cu2(AsO4)(OH) | Mon. 2/m : P21/m |
| 'Unnamed (Sb-analogue of Auriacusite)' | Fe3+Cu2+[(Sb,As)O4]O | |
| Zincolibethenite | CuZn(PO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnnm |
| Zincolivenite | CuZn(AsO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnnm |
Common Associates
Associations Based on Photo Data:
| 8 photos of Eveite associated with Akrochordite | MnMn2Mn2(AsO4)2(OH)4(H2O)4 |
| 5 photos of Eveite associated with Kraisslite | Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16 |
| 4 photos of Eveite associated with Sarkinite | Mn2+2(AsO4)(OH) |
| 4 photos of Eveite associated with Sussexite | Mn2+BO2(OH) |
Related Minerals - Strunz-mindat Grouping
| 8.BB. | Moabite | NiFe3+(PO4)O |
| 8.BB. | Tilasite | CaMg(AsO4)F |
| 8.BB. | Paulgrothite | Cu9Fe3+O4(PO4)4Cl3 |
| 8.BB. | Karlditmarite | Cu9O4(PO4)2(SO4)2 |
| 8.BB. | Milkovoite | Cu4O(PO4)(AsO4) |
| 8.BB.X | Arsenowagnerite | Mg2(AsO4)F |
| 8.BB.05 | Tavorite | LiFe3+(PO4)(OH) |
| 8.BB.05 | Amblygonite | LiAl(PO4)F |
| 8.BB.05 | Montebrasite | LiAl(PO4)(OH) |
| 8.BB.10 | Zwieselite | Fe2+2(PO4)F |
| 8.BB.10 | Triplite | Mn2+2(PO4)F |
| 8.BB.15 | 'Unnamed (Sb-analogue of Auriacusite)' | Fe3+Cu2+[(Sb,As)O4]O |
| 8.BB.15 | Joosteite | Mn2+(Mn3+,Fe3+)(PO4)O |
| 8.BB.15 | Hydroxylwagnerite | Mg2(PO4)(OH) |
| 8.BB.15 | Wagnerite | Mg2(PO4)F |
| 8.BB.15 | Stanĕkite | (Mn2+,Fe2+,Mg)Fe3+(PO4)O |
| 8.BB.15 | Triploidite | Mn2+2(PO4)(OH) |
| 8.BB.15 | Sarkinite | Mn2+2(AsO4)(OH) |
| 8.BB.15 | Wolfeite | Fe2+2(PO4)(OH) |
| 8.BB.20 | Holtedahlite | Mg2(PO4)(OH) |
| 8.BB.20 | Satterlyite | (Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6 |
| 8.BB.25 | Althausite | Mg4(PO4)2(OH,O)(F,◻) |
| 8.BB.30 | Zincolivenite | CuZn(AsO4)(OH) |
| 8.BB.30 | Adamite | Zn2(AsO4)(OH) |
| 8.BB.30 | Libethenite | Cu2(PO4)(OH) |
| 8.BB.30 | Zincolibethenite | CuZn(PO4)(OH) |
| 8.BB.30 | Olivenite | Cu2(AsO4)(OH) |
| 8.BB.30 | Auriacusite | Fe3+Cu2+(AsO4)O |
| 8.BB.35 | Paradamite | Zn2(AsO4)(OH) |
| 8.BB.35 | Tarbuttite | Zn2(PO4)(OH) |
| 8.BB.40 | Barbosalite | Fe2+Fe3+2(PO4)2(OH)2 |
| 8.BB.40 | Scorzalite | Fe2+Al2(PO4)2(OH)2 |
| 8.BB.40 | Lazulite | MgAl2(PO4)2(OH)2 |
| 8.BB.40 | Meizhouite | Fe2+V3+2(PO4)2(OH)2 |
| 8.BB.40 | Hentschelite | CuFe3+2(PO4)2(OH)2 |
| 8.BB.40 | Wilhelmkleinite | ZnFe3+2(AsO4)2(OH)2 |
| 8.BB.45 | Dokuchaevite | Cu8O2(VO4)3Cl3 |
| 8.BB.45 | Trolleite | Al4(PO4)3(OH)3 |
| 8.BB.45 | Yaroshevskite | Cu9O2(VO4)4Cl2 |
| 8.BB.50 | Namibite | Cu(BiO)2(VO4)(OH) |
| 8.BB.50 | Aleutite | [Cu5O2](AsO4)(VO4) · (Cu,K,Pb,Rb,Cs,)Cl |
| 8.BB.52a | Ericlaxmanite | Cu4O(AsO4)2 |
| 8.BB.52b | Kozyrevskite | Cu4O(AsO4)2 |
| 8.BB.55 | Phosphoellenbergerite | (Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6 |
| 8.BB.55 | Popovite | Cu5O2(AsO4)2 |
| 8.BB.60 | Urusovite | CuAl(AsO4)O |
| 8.BB.65 | Theoparacelsite | Cu3(As2O7)(OH)2 |
| 8.BB.70 | Turanite | Cu5(VO4)2(OH)4 |
| 8.BB.75 | Stoiberite | Cu5(VO4)2O2 |
| 8.BB.80 | Fingerite | Cu11(VO4)6O2 |
| 8.BB.85 | Averievite | Cu6(VO4)2O2Cl2 |
| 8.BB.90 | Richellite | CaFe3+2(PO4)2(OH,F)2 |
| 8.BB.90 | Lipscombite | Fe2+Fe3+2(PO4)2(OH)2 |
| 8.BB.90 | Zinclipscombite | ZnFe3+2(PO4)2(OH)2 |
Other Information
Notes:
Easily and completely soluble in cold 1:1 HCl giving a colorless solution.
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 Eveite
mindat.org URL:
https://www.mindat.org/min-1427.html
Please feel free to link to this page.
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References for Eveite
Reference List:
Moore, Paul B., Smith, Joseph R. (1968) Crystal chemistry of the basic manganese arsenates: III. The crystal structure of eveite, Mn2(OH)(AsO4) American Mineralogist, 53 (11-12) 1841-1845
Hålenius, U.; Westlund, E. (1996) A crystal field study of manganese in eveite and sarkinite. GFF, 118 (sup004). p.51. doi:10.1080/11035899609546331
Localities for Eveite
Showing 3 localities.
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.
Romania | |
| Paulina HIRTOPANU & Gheorghe UDUBASA (2015) +2 other references |
Sweden (TL) | |
| Moore (1967) +3 other references |
USA | |
| Dunn (1995) |
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Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden