Annabergite Mineral Data

Annabergite Mineral Data
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General Annabergite Information

Help on Chemical Formula: Chemical Formula: Ni3(AsO4)2•8(H2O)
Help on Composition: Composition: Molecular Weight = 598.03 gm
   Nickel    29.44 %  Ni   41.48 % Ni2O3
   Arsenic   25.06 %  As   38.43 % As2O5
   Hydrogen   2.70 %  H    24.10 % H2O
   Oxygen    42.81 %  O
            ______        ______ 
            100.00 %      104.01 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni3(AsO4)2•8(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1852
Help on Locality: Locality: Annaberg, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Annabergite + Pronunciation Say ANNABERGITE
Help on Synonym: Synonym: ICSD 81386
  Nickel Bloom
  PDF 35-568
 

Annabergite Image

Click Here for Larger Annabergite Image in a New Browser Window Images:
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Annabergite

Comments: Green spray of annabergite crystals.
Location: Laurium, Greece. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Annabergite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7619:1:0.3536
Help on Cell Dimensions: Cell Dimensions: a = 10.122, b = 13.284, c = 4.698, Z = 2; beta = 104.75° V = 610.88 Den(Calc)= 3.25
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.58(1), 2.98(0.3), 3.18(0.26),
Click Here for Large Annabergite Structure Window Crystal Structure:

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drag2 - RMB Resize/Rotate
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Wildner M , Giester G , Lengauer C L , McCammon C A , European Journal of Mineralogy , 8 (1996) p.187-192, Structure and crystal chemistry of vivianite-type compounds: Crystal, structures of erythrite and annabergite with a Mossbauer study of erythrite

 

Physical Properties of Annabergite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Apple green, Greenish white, Gray, Yellow green, White.
Help on Density: Density: 3 - 3.1, Average = 3.05
Help on Diaphaneity: Diaphaneity: Transparent to Subtransparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Pearly
Help on Streak: Streak: light green
 

Optical Properties of Annabergite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.245 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.292 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2017,KPDmeas= 0.215,KC= 0.2848
Ncalc = 1.85 - 1.93
Help on Optical Data: Optical Data: Biaxial (-), a=1.622, b=1.658, g=1.687, bire=0.0650, 2V(Calc)=82, 2V(Meas)=84. Dispersion relatively weak.
 

Calculated Properties of Annabergite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.00 gm/cc
note: Specific Gravity of Annabergite =3.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0035364165
Boson Index = 0.9964635835
Help on Photoelectric: Photoelectric: PEAnnabergite = 28.21 barns/electron
U=PEAnnabergite x rElectron Density= 84.59 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Annabergite is Not Radioactive
 

Annabergite Classification
Help on Dana Class: Dana Class: 40.03.06.04 (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 · x(H2O)
  (40.03.06)Vivianite Group
 
40.03.06.01 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m
 
40.03.06.02 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m
 
40.03.06.03 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.04 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.05 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m
 
40.03.06.06 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m
 
40.03.06.07 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.08 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m
 
40.03.06.09 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m
Help on Strunz Class: Strunz Class: 08.CE.40 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CE -With only medium-sized cations, RO4:H2O £ 1:2.5
 
08.CE.40 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Ferrisymplesite Fe3(AsO4)2(OH)3•5(H2O) None
 
08.CE.40 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Manganohornesite (Mn,Mg)3(AsO4)2•8(H2O) P 21/c 2/m
 
08.CE.40 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m
 

Other Annabergite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Annabergite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - Scandinavian mineral gallery
18 - WWW-MINCRYST

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Ask about Annabergite here :
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Print or Cut-and-Paste your Annabergite Specimen Label here :

Annabergite

Ni3(AsO4)2•8(H2O)
Dana No: 40.03.06.04 Strunz No: 08.CE.40
Locality:

 

Notes: