Mineralogy Database

Eveite Mineral Data

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General Eveite Information

Help on Chemical  Formula: Chemical Formula: Mn2(AsO4)(OH)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Mn2+2(AsO4)(OH)
Help on Environment: Environment: Dimorphous with sarkinite. Secondary mineral found encrusting cavities in deposits containing Fe-Mn oxides and carbonates.
Help on IMA Status: IMA Status: Approved IMA 1967
Help on Locality: Locality: Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its structural and chemical simularities to adamite.
Help on Name Pronunciation: Name Pronunciation: Eveite Say EVEITE
Help on Synonym: Synonym: ICSD 38426
  PDF 22-1166

Eveite Image

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  Eveite   Akrochordite

Comments: Micro crystals (to about 0.75mm) of very pale grayish green eveite in tiny vug with light pink akrochordite. Co-Type specimen & type locality.
Location: Langban, Varmland, Sweden. Scale: 13x10x4 mm.
© Tom Loomis / Dakota Matrix

Eveite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9771:1:0.7149
Help on Cell Dimensions: Cell Dimensions: a = 8.57, b = 8.77, c = 6.27, Z = 4; V = 471.25 Den(Calc)= 3.75
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.39(1), 3.058(0.9), 5.09(0.8),

Physical Properties of Eveite

Help on Cleavage: Cleavage: {101} Good
Help on Color: Color: Apple green.
Help on Density: Density: 3.76
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Eveite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.019 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1908,KPDmeas= 0.1903,KC= 0.1867
Ncalc = 1.7
Help on Optical Data: Optical Data: Biaxial (+), a=1.7, b=1.715, g=1.732, bire=0.0320, 2V(Calc)=88, 2V(Meas)=65.

Calculated Properties of Eveite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.51 gm/cc
note: Specific Gravity of Eveite =3.76 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001450315
Boson Index = 0.9998549685
Help on Photoelectric: Photoelectric: PEEveite = 30.49 barns/electron
U=PEEveite x rElectron Density= 106.98 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Eveite is Not Radioactive

Eveite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.06)where (A)2 (XO4) Zq
  (41.06.06)Olivenite Group Olivenite Cu2AsO4(OH) P 21/n 2/m Libethenite Cu2(PO4)(OH) Pnnm 2/m 2/m 2/m Adamite Zn2(AsO4)(OH) Pnnm 2/m 2/m 2/m Eveite Mn2(AsO4)(OH) Pnnm 2/m 2/m 2/m Zincolibethenite! CuZn(PO4)OH Pnnm 2/m 2/m 2/m Zincolivenite! CuZn(AsO4)(OH) Pnnm 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.BB.30 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.30 Eveite Mn2(AsO4)(OH) Pnnm 2/m 2/m 2/m
08.BB.30 Adamite Zn2(AsO4)(OH) Pnnm 2/m 2/m 2/m
08.BB.30 Libethenite Cu2(PO4)(OH) Pnnm 2/m 2/m 2/m
08.BB.30 Olivenite Cu2AsO4(OH) P 21/n 2/m
08.BB.30 Zincolibethenite! CuZn(PO4)OH Pnnm 2/m 2/m 2/m
08.BB.30 Zincolivenite! CuZn(AsO4)(OH) Pnnm 2/m 2/m 2/m

Other Eveite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Eveite :
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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Dana No: Strunz No: 08.BB.30





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