Annabergite Mineral Data

General Annabergite Information

Chemical Formula:

Ni3(AsO4)2•8(H2O)

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

Empirical Formula:

Ni₃(AsO₄)₂•8(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1852

Locality:

Annaberg, Germany. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Name Pronunciation:

Annabergite + Pronunciation

Synonym:

ICSD 81386

Nickel Bloom

PDF 35-568

Annabergite Image

Images:

Annabergite

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

Annabergite Crystallography

Axial Ratios:

a:b:c =0.7619:1:0.3536

Cell Dimensions:

a = 10.122, b = 13.284, c = 4.698, Z = 2; beta = 104.75° V = 610.88 Den(Calc)= 3.25

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m

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

By Intensity(I/I_o): 6.58(1), 2.98(0.3), 3.18(0.26),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

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

Cleavage:

{010} Perfect

Color:

Apple green, Greenish white, Gray, Yellow green, White.

Density:

3 - 3.1, Average = 3.05

Diaphaneity:

Transparent to Subtransparent to translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Pearly

Streak:

light green

Optical Properties of Annabergite

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

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

Electron Density:

Bulk Density (Electron Density)=3.00 gm/cc
note: Specific Gravity of Annabergite =3.05 gm/cc.

Fermion Index:

Fermion Index = 0.0035364165
Boson Index = 0.9964635835

Photoelectric:

PE_Annabergite= 28.21 barns/electron
U=PE_Annabergite x rElectron Density= 84.59 barns/cc.

Radioactivity:

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

Annabergite Classification

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

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

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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

Search for Annabergite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Annabergite :

A Bijoux Google Search for Annabergite
Adam's Minerals Google Search for Annabergite
Cape Minerals Google Search for Annabergite
Dakota Matrix Minerals Google Search for Annabergite
Excalibur Mineral Corp. Google Search for Annabergite
Exceptional Minerals Google Search for Annabergite
John Betts Fine Minerals Search for Annabergite
McDougall Minerals Google Search for Annabergite
Mineral News Website Link
Rock and Mineral Shows Google Search for Annabergite
Weinrich Minerals, Inc. Google Search for Annabergite

Ask about Annabergite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: